Table 5.12 — ECs whose label begins with H
| Label | Concept definition | Code |
| HAIL | <SOLID_PRECIPITATION> of either transparent or partly or completely opaque <PARTICLE>s of <ICE> (hailstones), usually spherical, conical, or irregular in form and of <<OUTSIDE_DIAMETER>> generally between 5 and 50 millimetres, that falls from a <CLOUD> either separately or agglomerated into irregular lumps; hail. | 506 |
| HALLWAY | An entrance-hall or passage serving as a <ROUTE> to various <ROOM>s in a <BUILDING>; a hallway [SOED, "hallway"] or corridor. | 507 |
| HARBOUR | A <WATERBODY_REGION> providing <ANCHORAGE> and protection for <VESSEL>s; a harbour. | 508 |
| HARBOUR_COMPLEX | A <HARBOUR> including one or more <ANCHORAGE_COMPLEX>s; a harbour complex. | 509 |
| HARD_STANDING | An open <TRACT> with a prepared <SURFACE> of pavement or gravel used for parking and/or storing <VEHICLE>s, particularly <AIRCRAFT>; a hard standing [SOED, "hard standing"]. | 510 |
| HARDENED_AIRCRAFT_SHELTER | A reinforced <SHELTER> that is resistant to <MUNITION>s and is designed for the protection of <AIRCRAFT>; a hardened aircraft shelter. | 511 |
| HAYSTACK | A regular pile of hay built in the open air; a haystack. | 512 |
| HAZARD_MARKER | A <MARKER> placed near or on a <TERRAIN_SURFACE_REGION> or <TERRAIN_SURFACE_OBJECT> to identify it as a potential hazard. | 513 |
| HEALTH_OFFICE | A <BUILDING> used in the diagnosis and care of outpatients; a health office or clinic. | 514 |
| HEAT_RADIATOR | <EQUIPMENT> consisting of a <STORAGE_TANK> and/or compact array of <PIPE>s that: has a large surface <<AREA>>; is heated, usually by circulating steam or hot <WATER>; and gives off warmth by radiation and convection; a heat radiator [SOED, "radiator", 2]. | 515 |
| HEATING_FACILITY | A <FACILITY> for the generation of thermal energy for heating purposes. | 516 |
| HEAVY_INDUSTRIAL_FACILITY | A <FACILITY> devoted to the processing of <MATERIAL> and/or the manufacture of goods (for example: steel, aluminum, glass, or <MOTOR_VEHICLE>s) that generally require significant <EQUIPMENT>, <MATERIAL>, and energy inputs; a heavy industrial facility. | 517 |
| HEDGEROW | A continuous growth of <SHRUB>s planted as a <FENCE>, a <BOUNDARY>, and/or a windbreak; a hedgerow. | 518 |
| HELICOPTER | An <AIRCRAFT> deriving both lift and propulsive power from horizontally revolving rotor blades and capable of ascending and descending vertically; a helicopter [SOED, "helicopter"]. | 519 |
| HELICOPTER_LANDING_PAD | An improved <SITE> used for take-off and landing VTOL <AIRCRAFT> (for example: a <HELICOPTER>); a helicopter landing pad. | 520 |
| HELIPORT | An <AERODROME> or a defined <REGION> on a <STRUCTURE> intended to be used wholly or in part for the arrival, departure, and/or surface movement of <HELICOPTER>s; a heliport. | 521 |
| HIGH_CLOUD | A <CLOUD> of the genus cirrus, cirrocumulus, or cirrostratus; a high cloud. Also the top of a <CLOUD> of the genus cumulonimbus or, occasionally, altostratus. | 522 |
| HIGH_PRESSURE_CENTRE | The <LOCATION> of the centre of an <ATMOSPHERE_REGION> of high <<ATM_PRESSURE>>. | 523 |
| HILL | A small, isolated, elevated portion of the <TERRAIN> that is smaller than a <MOUNTAIN>; a hill. | 524 |
| HINDU_TEMPLE | A <WORSHIP_PLACE> for Hindu worship; a Hindu temple. | 525 |
| HISTORICAL_BUILT_UP_REGION | A <TRACT> containing a concentration of historical <STRUCTURE>s within an enclosing <BUILT_UP_REGION>. | 526 |
| HOAR_FROST | A deposit of <ICE> (hoar crystals) that generally assumes the form of scales, needles, feathers, or fans and that forms on <OBJECT>s the <SURFACE>s of which are sufficiently cooled, usually by nocturnal radiation, to bring about deposition of the water vapour contained in the ambient <AIR>; hoar frost. | 527 |
| HOLDING_PATTERN_REGION | A delimited <REGION> within which <AIRCRAFT> follow a holding pattern while awaiting further clearance instructions. | 528 |
| HOP_FIELD | A <TRACT> covered by the systematic planting of hop vines; a hop field. | 529 |
| HOPPER | A top-loaded, funnel-shaped <STRUCTURE> for temporary holding of loose <MATERIAL> that will be dispensed from its bottom; a hopper. | 530 |
| HORSE | A solid-hoofed perissodactyl ungulate <MAMMAL> of the family Equidae; a horse [SOED, "horse", 1]. | 531 |
| HOSPITAL_BUILDING | A <BUILDING> used to provide inpatient medical, surgical, or psychiatric care and treatment for the sick or the injured; a hospital. | 532 |
| HOSTEL | A <BUILDING> used to provide supervised, inexpensive lodging for travellers, especially young travellers; a hostel [AHD, "hostel", 1]. | 533 |
| HOTEL | A <BUILDING> used to provide lodging, and usually meals and other services, for travellers and other paying guests; a hotel [AHD, "hotel"]. | 534 |
| HOUSE | A <BUILDING> serving as a <DWELLING> for one or more <HUMAN>s, especially for a family; a house [AHD, "house, 1.a"]. | 535 |
| HULK | A permanently moored <WATER_SURFACE_VESSEL>; a hulk. | 536 |
| HUMAN | A member of the <ANIMAL> species Homo sapiens; a human [SOED, "human", B.1]. | 537 |
| HUMMOCK | A <TRACT> of higher <<TERRAIN_ELEVATION>> than the <WETLAND> that surrounds it; a hummock. | 538 |
| HURRICANE | A warm core <TROPICAL_CYCLONE> with a maximum surface <<WIND_SPEED>> of 33 metres per second or greater in the North Atlantic, the Caribbean, the Gulf of Mexico, and in the eastern North Pacific; a hurricane. | 539 |
| HUT | A small, simple, or crude <HOUSE> or <SHELTER>; a hut. | 540 |
| HYDROFOIL_VESSEL | A <WATER_SURFACE_VESSEL> supported on airfoil-like pontoons where the bulk of the hull remains above the <WATERBODY_SURFACE> while in motion; a hydrofoil. | 541 |
| HYDROGRAPHIC_LOCK | A <LOCK_BASIN> with a pair or series of <LOCK_GATE>s used for raising or lowering <VESSEL>s as they pass from one level to another; a hydrographic lock. | 542 |
| HYDROGRAPHIC_SURVEY_CONTACT | An <UNDERWATER_OBJECT> detected during a hydrographic survey; a hydrographic survey contact. | 543 |
| HYDROGRAPHY | A <WATERBODY> and its adjoining <SHORE>s; hydrography. | 544 |
| HYDROLOGIC_OBJECT | A planetary <OBJECT> related to <WATER>; a hydrologic object. | 545 |
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