12-letter words containing p, o, r, l
- ballad opera — an opera consisting of popular tunes to which appropriate words have been set, interspersed with spoken dialogue
- ballot paper — A ballot paper is a piece of paper on which you indicate your choice or opinion in an election or ballot.
- barge couple — either of a pair of outside rafters along the gable end of a roof
- battle group — a group of warships usually consisting of at least one aircraft carrier, other surface ships, submarines, landing craft, etc
- beer parlour — a room in a tavern, hotel, etc in which beer is served
- benzal group — the bivalent group C 7 H 6 –, derived from benzaldehyde.
- benzyl group — the univalent group C 7 H 7 –, derived from toluene.
- bibliography — A bibliography is a list of books on a particular subject.
- bimorph cell — a piezoelectric transducer consisting of two crystals cemented together, used in microphones, headphones, loudspeakers, etc. to convert vibrations into a voltage output or to convert a signal voltage into vibrations that can produce audible sounds
- biographical — Biographical facts, notes, or details are concerned with the events in someone's life.
- bipropellant — a rocket propellant consisting of two substances, usually a fuel and an oxidizer
- black copper — a regulus of 95-percent-pure copper, produced in a blast furnace by smelting oxidized copper ores.
- black poplar — a Eurasian tree, Populus nigra
- black powder — gunpowder as used in sports involving modern muzzleloading firearms
- blastosphere — blastula
- blue pointer — a large shark, Isuropsis mako, of Australian coastal waters, having a blue back and pointed snout
- bolt upright — If someone is sitting or standing bolt upright, they are sitting or standing very straight.
- bomber pilot — the pilot of a bomber
- bottle party — a party to which guests bring drink
- breastplough — a plough driven by the worker's breast, often used to pare turf
- bullet-proof — Something that is bullet-proof is made of a strong material that bullets cannot pass through.
- burglarproof — safeguarded or secure against burglary.
- caloreceptor — a receptor stimulated by heat.
- camelopardus — a faint extensive constellation in the N hemisphere close to Ursa Major and Cassiopeia
- camerapeople — a person who operates a camera, especially a movie or TV camera.
- camphor ball — mothball
- cape colored — a South African of mixed European and African or Malayan ancestry.
- cape ortegal — a cape in NW Spain, projecting into the Bay of Biscay
- capitulatory — the act of capitulating.
- capriciously — subject to, led by, or indicative of a sudden, odd notion or unpredictable change; erratic: He's such a capricious boss I never know how he'll react.
- cardioplegia — deliberate arrest of the action of the heart, as by hypothermia or the injection of chemicals, to enable complex heart surgery to be carried out
- carisoprodol — a crystalline, water-soluble powder, C 12 H 24 N 2 O 4 , used as a muscle relaxant.
- carpool lane — a lane of a major road or motorway that is reserved for vehicles with a minimum number of passengers, designed to encourage carpooling
- catastrophal — (rare) Catastrophic.
- cattleperson — Someone who works with, or rears cattle.
- cephalometer — an instrument for positioning the human head for X-ray examination in cephalometry
- cephalometry — measurement of the dimensions of the human head by radiography: used mainly in orthodontics
- ceroplastics — the art of wax modelling
- chalcography — the art of engraving on copper or brass
- chalcopyrite — a widely distributed yellow mineral consisting of a sulphide of copper and iron in tetragonal crystalline form: the principal ore of copper. Formula: CuFeS2
- channel port — one of the English or French ports on the English Channel
- chartophylax — an official who serves chiefly as the chancellor and archivist of a diocese.
- childproofed — Simple past tense and past participle of childproof.
- chili powder — Chili powder is a very hot-tasting powder made mainly from dried chilies. It is used in cooking.
- chlorapatite — (mineral) A variety of apatite containing chloride instead of fluoride.
- chlorophenol — any of three isomers having the formula C 6 H 5 ClO, derived from chlorine and phenol, used chiefly as intermediates in the manufacture of dyes.
- chlorophylls — Plural form of chlorophyll.
- chlorophytes — Plural form of chlorophyte.
- chlorophytum — any plant of the genus Chlorophytum, esp C. elatum variegatum, grown as a pot plant for its long narrow leaves with a light central stripe, and characterized by the production of offsets at the end of long scapes: family Liliaceae
- chloropicrin — a colourless insoluble toxic lachrymatory liquid used as a pesticide and a tear gas; nitrotrichloromethane. Formula: CCl3NO2