Table 5.5 — ECs whose label begins with A
| Label | Concept definition | Code |
| ABATIS | A defence constructed by placing felled <TREE>s lengthwise one over the other with their branches towards the enemy's line; an abatis [SOED, "abatis"]. | 1 |
| ABYSS | A <WATERBODY_FLOOR> with <<DEPTH_OF_WATERBODY_FLOOR>> greater than 549 metres (approximately 1 800 feet); an abyss. | 2 |
| ACCESS_ZONE | A <TERRAIN_SURFACE_REGION> between a <CONTACT_ZONE> and the first passable <LAND_TRANSPORTATION_ROUTE>; an access zone. | 3 |
| ACOUSTIC_DATA_COLLECTION- _DEVICE |
A <DEVICE> used for the collection of acoustic data. | 4 |
| ACOUSTIC_SIGNATURE_PROPERTY- _SET |
A <PROPERTY_SET> describing the sound spectrum of an acoustic source and/or emitter; an acoustic signature property set. | 5 |
| ACOUSTIC_STATION | An <ACOUSTIC_DATA_COLLECTION_DEVICE> and support <STRUCTURE>s; an acoustic station. | 6 |
| ACOUSTIC_TRANSDUCER | A <DEVICE> to transform acoustic energy to and/or from electrical energy; an acoustic transducer. | 7 |
| ADMINISTRATION_BUILDING | A <BUILDING> devoted to the act and/or process of administration or management. | 8 |
| ADMINISTRATIVE_BOUNDARY | A <BOUNDARY> between administratively controlled <REGION>s. | 9 |
| ADMINISTRATIVE_REGION | A <REGION> controlled by an administrative authority. | 10 |
| AERATION_STRUCTURE | A <STRUCTURE> for aerating <WATER> by either passing <AIR> through <WATER> or passing <WATER> through <AIR>. | 11 |
| AERIAL | A <DEVICE> used to transmit and/or receive electromagnetic energy; an aerial [SOED, "aerial", B]. | 12 |
| AERIAL_CABLE | A <LOAD_CABLE> that is strung between <AERIAL_CABLE_PYLON>s as a <COMPONENT> of a <CONVEYOR> on which carrier units (for example: cars and/or buckets) are suspended; an aerial cable. | 13 |
| AERIAL_CABLE_PYLON | A <PYLON> supporting an <AERIAL_CABLE>; an aerial cable pylon. | 14 |
| AERIAL_CABLE_SET | A <SET> of one or more <AERIAL_CABLE>s. | 15 |
| AERIAL_SUPPORT_MAST | A <MAST> supporting an <AERIAL>. | 16 |
| AERODROME | A defined <TRACT> or <WATERBODY_SURFACE_REGION> (including <BUILDING>s, <FACILITY>s, and/or <EQUIPMENT>) intended to be used either wholly or in part for the arrival, departure, and movement of <AIRCRAFT> on a <PLANETARY_SURFACE>; an aerodrome. | 17 |
| AERODROME_ELEVATION_POINT | The highest <LOCATION> of the usable <RUNWAY>s of an <AERODROME> measured with respect to a <SURFACE_DATUM>; an aerodrome elevation point. | 18 |
| AERODROME_LIGHTING | A <NON_EMPTY_SET> of <LIGHT>s used to: define and outline <COMPONENT>s of <AERODROME>s such as perimeters, <RUNWAY>s, and <TAXIWAY>s; guide <AIRCRAFT> while on a <PLANETARY_SURFACE>; and provide guidance to <AIRCRAFT> on approach for landing. | 19 |
| AERODROME_REVETMENT | A <REVETMENT> at an <AERODROME>. | 20 |
| AERODROME_TERMINAL | A <BUILDING> located at an <AERODROME> used for disembarking and/or taking on passengers or <CARGO>; an aerodrome terminal. | 21 |
| AERONAUTICAL_AID_TO_NAVIGATION | An aeronautical <AID_TO_NAVIGATION>. | 22 |
| AERONAUTICAL_COMM_FACILITY | A <FACILITY> supporting an <AERONAUTICAL_COMM_SERVICE>. | 23 |
| AERONAUTICAL_COMM_SERVICE | A telecommunication service that supports aviation; an aeronautical communication service. | 24 |
| AERONAUTICAL_LEAD_RADIAL | A <DIRECTION> that provides at least 3 218,7 metres (2 miles) of lead to assist in turning an <AIRCRAFT> onto the intermediate portion of an instrument approach when the angle of intercept is greater than 90 arc degrees; an aeronautical lead radial. | 25 |
| AEROSOL | A colloidal <SYSTEM> in which the dispersed phase is composed of either solid or liquid <PARTICLE>s and the dispersion medium is a gas, usually <AIR>; an aerosol. | 26 |
| AGRICULTURAL_FACILITY | A <FACILITY> involved in crop production, the raising of livestock, and/or the storage or transportation of either <MATERIAL>s important to or the results of agricultural production. | 27 |
| AID_TO_NAVIGATION | A <DEVICE> designed to assist in the determination of a safe course for, or the <LOCATION> of, a <VEHICLE>, and/or to warn of dangers and obstructions; an aid to navigation. EXAMPLES <LIGHT>, <DISPLAY_SIGN>, electronic <BEACON>. |
28 |
| AIR | The gaseous <MATERIAL>s that comprise an <ATMOSPHERE>. | 29 |
| AIR_DEFENCE_ARTILLERY | Ground based surface to air <WEAPON>s for engaging <AIRCRAFT> and <MISSILE> targets; air defence artillery. | 30 |
| AIR_MASS | A widespread body of <AIR> that was established while situated over a <REGION> of the <PLANETARY_SURFACE> of the <EARTH> and that undergoes specific modifications while in transit away from that <REGION>; an air mass. An air mass is often approximately homogeneous in its horizontal extent (for example: <<AIR_TEMPERATURE>> and/or moisture distribution) and the vertical inhomogeneities are approximately the same over its horizontal extent. | 31 |
| AIR_TRAFFIC_SERVICE | A <NON_EMPTY_SET> of <AERONAUTICAL_COMM_SERVICE>s supporting air traffic management. EXAMPLES Flight information services, alerting services, air traffic advisory services, air traffic control services. |
32 |
| AIR_TRANSPORTATION_ROUTE | A <TRANSPORTATION_ROUTE> located principally in the <AIR>. | 33 |
| AIR_WARNING_LIGHT | A <NON_EMPTY_SET> of <LIGHT>s marking an obstacle that constitutes a danger to air navigation; an air warning light. | 34 |
| AIRBURST_SMOKE | <SMOKE> resulting from the explosion of a <MUNITION> in the <AIR>; airburst smoke. | 35 |
| AIRCRAFT | A <VEHICLE> that is used, or intended to be used, for flight in an <ATMOSPHERE>; an aircraft. | 36 |
| AIRCRAFT_CARRIER | A <WATER_SURFACE_VESSEL> designed to carry <AIRCRAFT> and operate as a naval air base, with a flat deck for take off and landing operations at <SEA>; an aircraft carrier. | 37 |
| AIRCRAFT_HANGAR | A <BUILDING> used for the storage of <AIRCRAFT>; an aircraft hangar [SOED, "hangar"]. | 38 |
| AIRCRAFT_LANDING_ZONE | A designated <REGION> of a <PLANETARY_SURFACE> where landing by <AIRCRAFT> is possible; a landing zone. | 39 |
| AIRCRAFT_MAINTENANCE_SHOP | A <BUILDING>, usually located at an <AERODROME>, used for keeping <AIRCRAFT> in a condition of good repair and/or efficiency; an aircraft maintenance shop. | 40 |
| AIRCRAFT_PARKING_FACILITY | A defined paved or hard-packed <TRACT> at an <AERODROME> intended as a parking <FACILITY> for <AIRCRAFT>. EXAMPLES <APRON>, <HARD_STANDING>. |
41 |
| AIRCRAFT_STORAGE_TRACT | A defined paved or hard-packed <TRACT> intended for long-term parking and storage of <AIRCRAFT>. | 42 |
| AIRCRAFT_WRECKAGE | Wreckage of an <AIRCRAFT> that is isolated, conspicuous, and can be used as a landmark. | 43 |
| AIRFIELD | An <AIRPORT> with limited or absent <BUILDING>s, <FACILITY>s, and <EQUIPMENT>; an airfield. | 44 |
| AIRPORT | A <AERODROME> on <LAND>; an airport. | 45 |
| AIRSHIP | A powered <BALLOON> with a main chamber filled with a gas that is less dense than the surrounding <AIR>; an airship. | 46 |
| AIRSPACE | An <ATMOSPHERE_REGION> where an <AIRCRAFT> operates; an airspace [SOED, "airspace"]. | 47 |
| AIRSPACE_BOUNDARY | The <BOUNDARY> of an <AIRSPACE>. | 48 |
| AIRSPACE_BOUNDARY_COMPONENT | A <COMPONENT> of an <AIRSPACE_BOUNDARY>. | 49 |
| AIRSPACE_COMPONENT | A <COMPONENT> of an <AIRSPACE>. | 50 |
| AIRSTRIP | An <AIRFIELD> with very limited <FACILITY>s; an airstrip. | 51 |
| ALGA | A <PROTIST> capable of photosynthesis; an alga [SOED, "alga"]. EXAMPLES <SEAWEED>, many unicellular and filamentous <LIVING_ORGANISM>s. |
52 |
| ALKALI_FLAT | A sterile <TERRAIN_PLAIN> containing an excess of alkali, usually occurring in the bottom of an under-drained <GEOGRAPHIC_BASIN> in an arid or semi-arid <TERRAIN_SURFACE_REGION>; the <LAND> may be soft, have low shearing and bearing strength, and a high organic content; an alkali flat. | 53 |
| ALLUVIAL_FAN | A gently sloping, fan-shaped configuration of the <TERRAIN>, usually found near the lower termination of a <CANYON>; an alluvial fan. | 54 |
| AMBASSADORIAL_RESIDENCE | A <BUILDING> serving as the <DWELLING> of a diplomatic official of the highest rank appointed and accredited as representative in residence by one government or sovereign to another; an ambassadorial residence. | 55 |
| AMPHIBIAN | A <VERTEBRATE> of the class Amphibia; an amphibian [SOED, "amphibian", B]. | 56 |
| AMPHIBIOUS_AIR_CUSHION_VEHICLE | An <AMPHIBIOUS_VEHICLE> designed to generate and move over a cushion of trapped <AIR> that supports the <VEHICLE> above the <PLANETARY_SURFACE>. | 57 |
| AMPHIBIOUS_ARMOURED_VEHICLE | An <AMPHIBIOUS_VEHICLE> that is <<ARMOURED>>. | 58 |
| AMPHIBIOUS_UTILITY_VEHICLE | An <AMPHIBIOUS_VEHICLE> designed or designated for utility operations. | 59 |
| AMPHIBIOUS_VEHICLE | A <VEHICLE> capable of operation either on a <WATERBODY_SURFACE> or on <LAND>; an amphibious vehicle. | 60 |
| AMPHITHEATRE | An oval or circular <BUILDING> with seats rising in tiers around the central open space, used for entertainment and/or public events; an amphitheatre [SOED, "amphitheatre", 1]. | 61 |
| AMUSEMENT_PARK | A predominantly man-made <RECREATIONAL_FACILITY> equipped with recreational <DEVICE>s; an amusement park. | 62 |
| AMUSEMENT_PARK_ATTRACTION | A large <STRUCTURE> located in an <AMUSEMENT_PARK>; an amusement park attraction. | 63 |
| ANCHOR | A <DEVICE> normally placed on a <WATERBODY_FLOOR>, attached to a <LOAD_CABLE>, and used to position a floating <OBJECT> (for example: a <VESSEL> and/or an <OFFSHORE_PLATFORM>); an anchor. | 64 |
| ANCHOR_BERTH | A designated <WATERBODY_SURFACE_REGION> where a single<VEHICLE> (for example: a <VESSEL>, a <SEAPLANE>, a <OIL_DRILLING_RIG>, and/or other watercraft) is anchored or may anchor; an anchor berth. | 65 |
| ANCHORAGE | A <WATERBODY_SURFACE_REGION> where <VESSEL>s may anchor; an anchorage. | 66 |
| ANCHORAGE_COMPLEX | An <ANCHORAGE> plus related <NAVIGATION_MARK_FIXED>s and/or <NAVIGATION_MARK_AFLOAT>s; an anchorage complex. | 67 |
| ANEMOMETER | A <WIND_INDICATOR> designed to measure total <<WIND_SPEED>> or the <<SPEED>> of one or more linear (vector) components of the <WIND>; an anemometer. | 68 |
| ANIMAL | A <LIVING_ORGANISM> of the kingdom Animalia, having sensation and voluntary motion, without rigid cell walls, and dependent on organic substances for food; an animal [SOED, "animal", 1.a]. | 69 |
| ANIMAL_PARK | A <REGION> with a collection of live <NON_HUMAN_ANIMAL>s, usually for public display; an animal park. | 70 |
| ANIMAL_SANCTUARY | A <REGION> that has been set aside for the preservation and protection of wild <NON_HUMAN_ANIMAL>s; an animal sanctuary. | 71 |
| ANTE_ROOM | A <ROOM> before or forming an entrance to another; an ante-room [SOED, "ante-room"]. | 72 |
| APARTMENT_HOUSE | A multi-residence <BUILDING> containing rental accommodations for hire on a long-term basis; an apartment house. | 73 |
| APERTURE | An opening and/or hole in an <OBJECT>, especially a <STRUCTURE>; an aperture. | 74 |
| APRON | A usually paved <TRACT> located at an <AERODROME> where <AIRCRAFT> can park, load or unload, refuel, and/or undergo servicing; an apron [SOED, "apron", II.10]. | 75 |
| AQUEDUCT | A <PIPE> or artificial channel designed to transport <WATER> from a remote source, usually by gravity; an aqueduct. | 76 |
| AQUEDUCT_NEXUS | A representation of one or more <AQUEDUCT>s, especially in a <BUILT_UP_REGION>; an aqueduct centre-line or aqueduct nexus. | 77 |
| ARACHNID | An <ARTHROPOD> of the class Arachnida; an arachnid [SOED, "arachnid"]. EXAMPLES Spider, scorpion, mite, tick. |
78 |
| ARBORETUM | A culturally designated <TRACT> where rare <TREE>s are cultivated and displayed; an arboretum [SOED, "arboretum"]. | 79 |
| ARCADE | A covered pedestrian <ROUTE> composed of arches and pillars, usually open along one or both sides; an arcade. | 80 |
| ARCHAELOGICAL_SITE | A <SITE> where remains of ancient civilizations and/or the activities of <HUMAN>s have been discovered; an archaeological site. | 81 |
| ARMISTICE_LINE | A <BOUNDARY> established by opposing political groups as a result of cessation of hostilities; an armistice line. | 82 |
| ARMOURED_BRIDGE_LAUNCHER | A <COMBAT_SUPPORT_VEHICLE> that is <<ARMOURED>> and is capable of launching an AVLB; an armoured bridge launcher. | 83 |
| ARMOURED_FIGHTING_VEHICLE | A <COMBATANT_VEHICLE> that is <<ARMOURED>> and mounted with guns or other armaments, often used to move groups of soldiers; an armoured fighting vehicle. EXAMPLES Infantry fighting <GROUND_VEHICLE>, armoured personnel carrier, self-propelled <MORTAR>, armoured car, chemical reconnaissance <VEHICLE>, anti-tank guided missile launcher. |
84 |
| ARMOURED_TRACKED_FIGHTING- _VEHICLE |
A <ARMOURED_TRACKED_VEHICLE> that is heavily <<ARMOURED>>, mounted with cannon and guns; an armoured tracked fighting vehicle. | 85 |
| ARMOURED_TRACKED_VEHICLE | A closed <COMBATANT_VEHICLE> that is <<ARMOURED>> and moves on caterpillar treads; an armoured tracked vehicle. | 86 |
| ARMOURED_UTILITY_VEHICLE | A <COMBAT_SUPPORT_VEHICLE> that is <<ARMOURED>>. EXAMPLES Engineering <GROUND_VEHICLE>, tracked load carrier, towing <VEHICLE>, recovery <VEHICLE>. |
87 |
| ARMOURY | A <BUILDING> for storing arms and military <EQUIPMENT>, especially one serving as headquarters for reserve <MILITARY_PERSONNEL>; an armoury [AHD, "armory", 1.b]. | 88 |
| ARRESTING_GEAR | <EQUIPMENT> (for example: a <LOAD_CABLE> and/or a <BARRIER>) that can be used to stop an <AIRCRAFT> immediately upon landing; an arresting gear. | 89 |
| ARTHROPOD | An <INVERTEBRATE> of the phylum Arthropoda that is characterized by having a segmented body and jointed limbs; an arthropod [SOED, "arthropod"]. EXAMPLES <INSECT>, <ARACHNID>, <CRUSTACEAN>. |
90 |
| ARTIFICIAL_SATELLITE | A <SPACECRAFT> designed to be placed in orbit around a <PLANET> or, occasionally, another <CELESTIAL_BODY>; an artificial satellite [SOED, "satellite", A.2.c]. | 91 |
| ARTILLERY_BATTERY | An emplacement for one or more pieces of <FIELD_ARTILLERY>; an artillery battery [SOED, "battery", II.4]. | 92 |
| ASPHALT_POOL | A naturally-occurring pool of liquid asphalt. | 93 |
| ASSEMBLY_PLANT | A <SITE> and associated <BUILDING>s used for the purpose of combining manufactured <COMPONENT>s to make a completed product; an assembly plant. | 94 |
| ASTEROID | Any of numerous small <CELESTIAL_BODY>s in the <SOLAR_SYSTEM> of the <SUN>, with orbits lying chiefly between <MARS> and <JUPITER>, and characteristic <<OUTSIDE_DIAMETER>>s between a few and several hundred kilometres; a minor planet, planetoid, or asteroid [SOED, "asteroid", A.1]. | 95 |
| ASTRONOMIC_PROPERTY_SET | A <PROPERTY_SET> containing information about <CELESTIAL_BODY>s and other astronomical matters. | 96 |
| ASTRONOMICAL_STATION | A <STRUCTURE> used for the scientific study of matter in <SPACE>, especially the <LOCATION>s, dimensions, distribution, motion, composition, energy, and evolution of <CELESTIAL_BODY>s or celestial phenomena; an astronomical station. | 97 |
| ASW_HELICOPTER | A <HELICOPTER> designed or designated for ASW operations. | 98 |
| ASW_WINGED_AIRCRAFT | A winged <AIRCRAFT> designed or designated for ASW operations. | 99 |
| ATHLETIC_COMPLEX | A <SITE> and associated <STRUCTURE>s used for recreational exercise and major sports competitions, which typically serves a large metropolitan <BUILT_UP_REGION>; an athletic complex. | 100 |
| ATHLETIC_FIELD | An open <TRACT> where sporting events, exercises, and/or games occur; an athletic field. | 101 |
| ATMOSPHERE | A gaseous envelope gravitationally bound to a <CELESTIAL_BODY>; an atmosphere. | 102 |
| ATMOSPHERE_PROPERTY_SET | A <PROPERTY_SET> describing a <LOCATION> in the <ATMOSPHERE> or an <ATMOSPHERE_REGION>. | 103 |
| ATMOSPHERE_REGION | A <REGION> of an <ATMOSPHERE>. | 104 |
| ATMOSPHERIC_FRONT | The <BOUNDARY> or transition zone between <AIR_MASS>s of different <<AIR_DENSITY>>s; an atmospheric front. | 105 |
| ATRIUM | A central court that is located in a <BUILDING>, rises through one or more <FLOOR_LEVEL>s, is surrounded by galleries at each <FLOOR_LEVEL> with <ROOM>s opening off, and is often skylighted; an atrium. | 106 |
| ATS_ROUTE | A specified <AIR_TRANSPORTATION_ROUTE> designed for channelling the flow of <AIRCRAFT> as necessary for the provision of <AIR_TRAFFIC_SERVICE>s; an ATS route. | 107 |
| ATS_ROUTE_COMPONENT | A <COMPONENT> of an <ATS_ROUTE> that is defined by two <LOCATION>s specified in a flight plan; these <LOCATION>s are either continental geographical <LOCATION>s, insular geographical <LOCATION>s, or <LOCATION>s at which a definite radio fix can be established. | 108 |
| ATTACK_HELICOPTER | A <HELICOPTER> designed for military attack operations. | 109 |
| ATTACK_WINGED_AIRCRAFT | A winged <AIRCRAFT> designed for military attack operations. | 110 |
| ATTIC | The highest <FLOOR_LEVEL> of a <BUILDING>, usually immediately under the beams of the <ROOF>, or a <ROOM> in this location; an attic [SOED, "attic", B.2] or garret. | 111 |
| AUDITORIUM | A large <BUILDING> for public meetings and/or performances; an auditorium. | 112 |
| AURORA | Luminous phenomena, in the form of arcs, bands, draperies, and/or curtains in a high <ATMOSPHERE_REGION> caused by charged <PARTICLE>s from <SPACE>, mainly at high latitudes; an aurora. | 113 |
| AURORA_OVAL | The locus of structured <AURORA> around each <PLANETARY_MAGNETIC_POLE> of the <EARTH>, roughly forming an oval band between 60 and 70 degrees latitude in both northern and southern hemispheres; an aurora oval. | 114 |
| AUTOMATED_TELLER_MACHINE | A <DEVICE> that provides money and/or performs banking services when a special card is inserted and a password is typed in; an automated teller machine [SOED, "teller", II.2.a; "automated teller machine"]. | 115 |
| AUTOMOTIVE_PLANT | A <HEAVY_INDUSTRIAL_FACILITY> used for the purpose of manufacturing <MOTOR_VEHICLE>s; an automotive plant. | 116 |
| AVIATION_NAVIGATION_MARKER | An <AERONAUTICAL_AID_TO_NAVIGATION> used as a guide to a pilot of an <AIRCRAFT> seeking a particular <REGION> and/or avoiding a <MAN_MADE_AIR_OBSTRUCTION>; an aviation navigation marker. EXAMPLES Flare, distinctive <DISPLAY_SIGN>. |
117 |
| AVIATION_WAYPOINT | A <WAYPOINT> used in aviation. | 118 |
http://www.iso.ch/iso/en/ittf/PubliclyAvailableStandards/ISO_IEC_18025_Ed1.html