Table 5.20 — ECs with labels beginning with P
Label Concept definition Figure(s) Code
PACK_ICE A <REGION> of <ICE> on a <WATERBODY> formed by the drifting and crushing together of ice floes, where the term is used in a wide sense to include any <REGION> of sea ice other than fast ice; pack ice. The movement of individual floes is restricted as the pack moves as a single unit.   842
PAGODA A <HINDU_TEMPLE>, <BUDDHIST_TEMPLE>, and/or sacred <BUILDING>, usually in the form of a many-tiered <TOWER> with <FLOOR_LEVEL>s of diminishing size, each with an ornamented projecting <ROOF>; pagoda [SOED, "pagoda", 1].   843
PALACE A <BUILDING> serving, or that has previously served, as the official residence of a royal personage or high dignitary in a religious establishment or government; palace.   844
PALACE_COMPLEX A <PALACE> and one or more associated <BUILDING>s; palace complex.   845
PAPER_MILL A <FACILITY> for processing natural fibres (for example: wood) into flexible sheets or rolls of paper by deposit from an aqueous suspension; paper-mill.   846
PARAPET An <EMBANKMENT>, especially one on top of a <WALL> or <RAMPART> or in front of a <MILITARY_TRENCH>, that is built to provide protection from an enemy's observation and fire, to protect <EQUIPMENT>, to stabilize an adjacent <STRUCTURE>, or to serve as a <TERRAIN_OBSTACLE>; parapet [SOED, "parapet", 1].   847
PARCEL An administrative subdivision of a <TRACT>; parcel.   848
PARK A <PLANETARY_SURFACE_REGION> used for recreational or ornamental purposes; park.   849
PARKING_GARAGE A <BUILDING> or indoor space used to park or keep <MOTOR_VEHICLE>s; parking garage.   850
PARKING_LANE A <ROUTE_LANE_LAND> at the <BOUNDARY> of a <ROAD> that is intended to serve as a parking <LOCATION> for <MOTOR_VEHICLE>s; parking lane.   1459
PARKING_METER A <METER>, usually coin-operated, receiving fees and registering the <<TIME_QUANTITY>> for which a <GROUND_VEHICLE> is allowed to park; parking meter.   1460
PARTICLE A minute portion of <MATERIAL>; particle [SOED, "particle", 2].   851
PARTICLE_ACCELERATOR A <DEVICE> for imparting high velocities to charged <PARTICLE>s; particle accelerator.   852
PATROL_CRAFT A <WATER_SURFACE_VESSEL> under 100 tonnes in displacement and equipped for patrol duties on relatively sheltered <WATERBODY_SURFACE_REGION>s (for example: <HARBOUR>s and/or <RIVER>s); patrol craft.   853
PENSTOCK A <PIPELINE> or channel generally used by hydroelectric <POWER_PLANT>s or water mills to transport <WATER> by gravity or under pressure; penstock.   854
PERMAFROST A layer of <SOIL> or <BEDROCK> at a variable <<DEPTH_BELOW_SURFACE_LEVEL>> beneath the <SURFACE> of the <LAND> in which the <<TEMPERATURE>> has been below freezing continuously from a few to thousands of years; permafrost.   855
PERMANENT_SNOWFIELD A permanent <SNOWFIELD>.   856
PERSONNEL The <NON_EMPTY_SET> of <HUMAN>s employed by an organization or engaged in a service; personnel [SOED, "personnel", 1.a].   857
PETROLEUM A dark viscous liquid consisting chiefly of hydrocarbons that is sometimes present in <ROCK> and is refined for use (for example: as a fuel and/or as a source material for manufacturing); petroleum [SOED, "petroleum", 1.a].   858
PETROLEUM_BUILDING A <BUILDING> involved in the production or distribution of <PETROLEUM>.   859
PETROLEUM_FACILITY A <FACILITY> involved in the production or distribution of <PETROLEUM>, oil, and/or natural gas products [DFDD, Feature Dictionary: AC040].   860
PETROLEUM_FIELD A <TRACT> where <PETROLEUM> is pumped or otherwise removed from the ground; petroleum field.   861
PETROLEUM_REFINERY An <INDUSTRIAL_WORKS> for refining and purifying <PETROLEUM>; petroleum refinery.   862
PETROLEUM_TANK_FARM A <FACILITY> devoted to the storage of <PETROLEUM> through the use of a collection of, generally above ground, <STORAGE_TANK>s; petroleum tank farm [SOED, "tank farm"].   863
PHOSPHORESCENT_REGION A phosphorescent <WATERBODY_REGION>.   864
PICNIC_TRACT A <TRACT> that has picnic tables for public use.   865
PIER A long, narrow <STRUCTURE> extending into a <WATERBODY> to afford a berthing place for <VESSEL>s or to serve as a promenade; pier.   866
PINGO A conical or dome-shaped <HILL>, oval in plan, having a large central core of <ICE> and developed in a <TERRAIN_SURFACE_REGION> of <PERMAFROST>; pingo [S32, "pingo"] and [DESCI, "pingo"]. Pingos are formed from the encroachment of <PERMAFROST> and the resulting hydrostatic pressure. Some pingos have breached crests in which <ICE> may be exposed.   867
PIPE A hollow cylinder or tube of metal, plastic, or other <MATERIAL> that is used for the conveyance of slurries, liquids, or gases; pipe [SOED, "pipe", n1.3.a].   868
PIPELINE A <NON_EMPTY_SET> or connected <SET> of <PIPE>s for conveying liquids, slurries, or gases, often underground; pipeline.   869
PIPELINE_TERMINUS The apparent end of a <PIPELINE> located above the <TERRAIN> where it enters the <TERRAIN>; pipeline terminus. This apparent end often occurs at a pumping or industrial <FACILITY> or where the <PIPELINE> crosses under a <LAND_TRANSPORTATION_ROUTE>.   870
PIPING_COMPLEX A <NON_EMPTY_SET> of <PIPE>s and associated <PUMP>s used to transfer slurries, liquids, or gases from one <LOCATION> to another; piping complex.   871
PLANET A <CELESTIAL_BODY> that (a) is in orbit around a <STAR>, (b) has sufficient <<MASS>> for its self-gravity to overcome rigid body forces so that it assumes a hydrostatic equilibrium (nearly round) shape, and (c) has cleared the neighbourhood around its orbit; planet.   872
PLANETARY_MAGNETIC_POLE Either of the two <LOCATION>s on a <PLANETARY_SURFACE> where, given the presence of a planetary <MAGNETIC_FIELD>, the magnetic dip is 90 arc degrees (locally vertical); planetary magnetic pole.   873
PLANETARY_POLE Either of the two <LOCATION>s where the axis of rotation of a <PLANET> intersects the <PLANETARY_SURFACE>; planetary pole.   874
PLANETARY_SURFACE The <SURFACE> of a <PLANET>, specifically the <SURFACE> of the <LAND> and/or <WATERBODY>s.   875
PLANETARY_SURFACE_REGION A <REGION> of a <PLANETARY_SURFACE>.   1486
PLANKTON Zooplankton or phytoplankton that is passively floating or drifting in a <WATERBODY>; plankton [MWCD, "plankton"].   876
PLANKTON_BLOOM An enormous concentration of <PLANKTON> in a <WATERBODY>, caused either by an explosive or a gradual multiplication and usually producing an obvious change in the physical appearance of the <WATERBODY_SURFACE_REGION>, such as discolouration; plankton bloom.   877
PLANT A <LIVING_ORGANISM> of the kingdom Plantae, the members of which typically are fixed to a substrate, able to subsist wholly on inorganic substances, and move chiefly by growth; plant [SOED, "plant", 2].   878
PLANT_NURSERY A <FACILITY> where <PLANT>s are grown for transplanting, seed, or grafting; plant nursery.   879
PLANTATION An estate where cash crops are grown on a large scale, especially in tropical <REGION>s; plantation [SOED, "plantation", 5].   880
PLANTER A <CONTAINER> for growing or displaying <PLANT>s; planter [SOED, "planter", 6b].   1435
PLATEAU A relatively flat <TERRAIN_SURFACE_REGION> that falls off gradually on at least one side; plateau.   881
PLUME An identifiable stream of <AIR> with an <<AIR_TEMPERATURE>> or composition different from that of its environment; plume.
EXAMPLE     <SMOKE> from a <CHIMNEY>.
  882
PLUTO The <DWARF_PLANET> of the <SUN> whose orbit is primarily outside that of <NEPTUNE>; Pluto.   883
POD A <SET> of two or more seals or <WHALE>s closely clustered together; pod.   884
POINT_ABEAM The <LOCATION> on a <LINE> that is nearest to and abeam of another <LOCATION> that is not on the <LINE>; point abeam.
EXAMPLE     A <LOCATION> on the centre-line of a <RUNWAY> is abeam a glide slope <AERIAL> when the distance from the centre-line of the <RUNWAY> to the glide slope <AERIAL> is at a minimum.
  885
POLAR_CAP A <REGION> of <ICE> or other frozen <MATERIAL> surrounding a <PLANETARY_POLE>; polar cap [SOED, "polar cap"].   886
POLAR_ICE <ICE> that is a permanent feature of <PLANETARY_POLE>s; polar ice.   887
POLE A long, slender, more or less cylindrical piece of <MATERIAL> (for example: wood or metal) used as a support (for example: to hold up a <TENT>, for <VEGETATION> to climb on, for supporting an <ELEVATED_ELECTRICAL_CABLE>, and/or for holding up scaffolding); pole [SOED, "pole", 1.a].   888
POLICE_STATION A <PUBLIC_SERVICE_STATION> that serves as the headquarters of a unit of a police force and that is where those under arrest are first charged; police station.   889
POLYNYA A large <REGION> of <OPEN_WATER> that is surrounded by floating <ICE>; polynya [SOED, "polynya"].   891
PONTOON A broad, flat-bottomed <STRUCTURE> that is rectangular in shape, resembles a barge, and is designed to float on a <WATERBODY_SURFACE>; pontoon.   892
PORPOISE A small to moderate sized member of the order Cetacea, suborder Odontoceti, family Phocaenidae; porpoise.   893
POST_OFFICE A <PUBLIC_SERVICE_STATION> where postal business (for example: where mail is handled and/or where stamps and other postal materials are sold) may be carried on; post office.   894
POTENTIAL_LANDSLIDE_REGION A <TRACT> with a high potential of slipping down from an elevated <LOCATION> (for example: a <CLIFF> and/or the side of a <MOUNTAIN>); potential landslide region.   895
POTENTIAL_TEMPERATURE-
_INVERSION_LAYER
A layer in an <ATMOSPHERE> where the <<POTENTIAL_AIR_TEMPERATURE>> increases with <<HEIGHT_AGL>>; potential temperature inversion layer.   1439
POWER_GENERATION_BUILDING A <BUILDING> and associated <EQUIPMENT> used for the generation of electric power; power generation building.   896
POWER_PLANT A <FACILITY> including one or more <POWER_GENERATION_BUILDING>s; power plant.   897
POWER_SUBSTATION A <FACILITY>, along a <POWER_TRANSMISSION_LINE>, in which electric current is transformed and/or distributed; power substation. A power substation is also known as a transformer yard.   898
POWER_TRANSMISSION_LINE A <SYSTEM> of <ELEVATED_ELECTRICAL_CABLE>s and associated <POWER_TRANSMISSION_LINE_PYLON>s that transmit electrical power; power transmission line.   899
POWER_TRANSMISSION_LINE_PYLON A <PYLON> or <POLE> used to support a <POWER_TRANSMISSION_LINE>.   900
POWER_TRANSMISSION_LINE-
_TERMINUS
The terminus of a <POWER_TRANSMISSION_LINE> at a <POWER_PLANT>, <POWER_SUBSTATION>, transformer, or receiving <FACILITY>.   901
PRECIPITATION Aqueous <PARTICLE>s in liquid phase or solid phase that originate in the <ATMOSPHERE> and fall to the <PLANETARY_SURFACE> of the <EARTH>; precipitation.   902
PRECIPITATION_REGION A <REGION> where <PRECIPITATION> is occurring.   903
PRECOLLEGIATE_CAMPUS A <FACILITY> used for precollegiate instruction (generally of children); precollegiate campus.   904
PREPARED_DEFENSIVE_POSITION-
_SITE
A <SITE> containing one or more prepared <DEFENSIVE_POSITION>s.   905
PREPARED_DEFENSIVE_TRACT A <TRACT> containing military <STRUCTURE>s resistant to <MUNITION>s (for example: a bastion, a <RAMPART>, a <FORTIFICATION>, a <DEFENSIVE_POSITION>, an <INFANTRY_TRENCH>, and/or a <BUNKER>); prepared defensive tract.   906
PREPARED_WATERCOURSE_CROSSING A <LOCATION> on a <WATERCOURSE> that has <RAMP>s, <STRUCTURAL_PILE>s, and/or <PIER>s constructed on one or both <SHORE>s to allow for suitable future crossing operations using floating <BRIDGE>s or rafting <EQUIPMENT>; prepared watercourse crossing.   907
PRESSURE_ICE <ICE> located in a <SEA>, <RIVER>, or <LAKE> that has been deformed or altered by the lateral stresses of any combination of <WIND>, <TIDE>s, <WATER_WAVE>s, and <SURF>; pressure ice.   908
PREVAILING_CURRENT A <WATERBODY_CURRENT> most frequently observed during a given observation period, usually a month, season, or year; prevailing current.   909
PRISON A <DETENTION_FACILITY> where long (usually more than one year) sentences for criminal misconduct can be served; prison.   910
PROCESSING_BUILDING A <BUILDING> that is used for the changing or refining of a particular <MATERIAL>; processing building. A processing building is also known as a treatment building.   911
PROCESSING_FACILITY A <FACILITY> including one or more <PROCESSING_BUILDING>s; processing facility.   912
PROHIBITED_REGION A <REGION>, usually on a <MILITARY_INSTALLATION>, where entrance or presence of unauthorized <PERSONNEL> is prohibited, typically due to the presence of unexploded <MUNITION>s, <EXPLOSIVE_MINE>s, or sensitive environmental habitats; prohibited region.   913
PROMONTORY A high point of <LAND> extending into a <WATERBODY>; promontory.   914
PROPERTY_SET A <SET> of EDCS Attributes and/or functional relationships between EDCS Attributes that are applicable to an <OBJECT>, <LOCATION>, and/or <REGION>; property set.   915
PROTECTION_SHED A <SHELTER> built to protect a section of <ROAD> or <RAILWAY> from slides of <SNOW_GROUND_COVER> and/or <ROCK>; protection shed.   916
PROTIST A <LIVING_ORGANISM> of the kingdom Protista, the members of which are simple organisms that are between, or distinct from, <ANIMAL>s and <PLANT>s, especially a unicellular eukaryote; protist [SOED, "protist"].
EXAMPLES     Protozoan, single-celled <ALGA>.
  917
PTERIDOPHYTE A <PLANT> of the group Pteridophyta; pteridophyte [SOED, "pteridophyte"].
EXAMPLES     <FERN>, horsetail, clubmoss.
  918
PUBLIC_INN A <RESTAURANT> where lodging may be available; public inn.   919
PUBLIC_SERVICE_STATION A station that houses public services and from which operations are directed or services provided.   920
PUBLIC_SQUARE An open <TRACT> used for public meetings in a <CITY> or <TOWN>; public square.   921
PUBLIC_TELEPHONE A <TELEPHONE> that accesses the public land line <NETWORK> and is at a fixed <LOCATION> for use by the general public.   1463
PUFF A small, identifiable quantity of <AIR> with a composition different from that of its environment emitted in one light, abrupt blast; puff.
EXAMPLE     The initial <NON_AQUEOUS_CLOUD> of <SMOKE> from an explosion.
  922
PULPIT A raised <STRUCTURE> consisting of an enclosed platform from which the preacher in a <CHURCH> or <CHAPEL> delivers the sermon; pulpit [SOED, "pulpit", 2.a].   923
PUMP A mechanical <DEVICE> used to move fluid by lifting, suction, or pressure; pump.   1464
PUMP_OUT_FACILITY A <FACILITY> with <EQUIPMENT> to pump out waste liquids from <VEHICLE>s; pump out facility.   924
PUMP_ROOM A <BUILDING> or <ROOM> housing <PUMP>s for raising, compressing, or transferring fluids; pump room. In the US, a pump room is also known as a pump house.   925
PUMPING_STATION A <FACILITY> to move slurries, liquids, or gases by means of pressure or suction; pumping station.   926
PYLON A tall <STRUCTURE> erected as a support; pylon [SOED, "pylon", 4.a].   927