10-letter words containing p, o, i, r
- phosphoric — of or containing phosphorus, especially in the pentavalent state.
- photoprint — a photographic print.
- physiocrat — one of a school of political economists who followed Quesnay in holding that an inherent natural order properly governed society, regarding land as the basis of wealth and taxation, and advocating a laissez-faire economy.
- piano roll — a roll of paper containing perforations such that air passing through them actuates the keys of a player piano.
- piano trio — an instrumental ensemble consisting of a piano, a violin, and a cello
- piano wire — a very thin steel wire of high tensile strength.
- pianoforte — a piano.
- piatigorsk — a city in the SW Russian Federation in Europe, in Caucasia.
- pickleworm — the larva of a pyralid moth, Diaphania nitidalis, that bores into the stem and fruit of squash, cucumber, and other cucurbitaceous plants.
- picrotoxin — a white, crystalline, bitter, poisonous, central nervous system stimulant, C 3 0 H 3 4 O 1 3 , obtained from the seeds of Anamirta cocculus: used chiefly in the treatment of barbiturate poisoning.
- pictograph — pictogram
- pictorials — pertaining to, expressed in, or of the nature of a picture.
- piesporter — any of various white wines from the area around the village of Piesport in the Moselle valley in Germany
- piezometer — any of several instruments for measuring the pressure of a fluid or the compressibility of a substance when subjected to such a pressure.
- piezometry — the measurement of pressure or compressibility.
- pileorhiza — a calyptra
- piliferous — having or producing hair.
- pillar box — a pillarlike box in which letters are deposited for collection by mail carriers; mailbox.
- pillorying — a wooden framework erected on a post, with holes for securing the head and hands, formerly used to expose an offender to public derision.
- pilot bird — a warbler of forest floors in SE Australia, Pycnoptilus floccosus, named from its alleged habit of accompanying the superb lyrebird
- pin clover — alfilaria.
- pine grove — a group of pine trees that are close together
- pinot noir — any of several varieties of purple or white vinifera grapes yielding a red or white wine, used especially in making burgundies and champagnes.
- pinspotter — pinsetter.
- pioneer 10 — a US spacecraft that studied the solar system, making the first flyby of Jupiter in 1973
- pioneer 11 — a US spacecraft that studied the solar system, making the first flyby of Saturn in 1979
- pioneering — a person who is among those who first enter or settle a region, thus opening it for occupation and development by others.
- pipe major — the noncommissioned officer, generally of warrant officer's rank, who is responsible for the training, duty, and discipline of a military or civilian pipe band
- pipe organ — organ (def 1).
- pirandello — Luigi [loo-ee-jee] /luˈi dʒi/ (Show IPA), 1867–1936, Italian dramatist, novelist, and poet: Nobel prize 1934.
- pirouetter — someone who performs pirouettes
- piston rod — a rod communicating the rectilinear motion of a piston to the small end of a connecting rod or elsewhere.
- pit worker — a person who works down a mine, esp a coal miner
- pitchforks — a large, long-handled fork for manually lifting and pitching hay, stalks of grain, etc.
- plane iron — the blade of a plane.
- plauditory — approving or laudatory
- pleiotropy — the phenomenon of one gene being responsible for or affecting more than one phenotypic characteristic.
- pleochroic — (of a biaxial crystal) characterized by pleochroism.
- pleromatic — relating to the pleroma
- plesiosaur — any marine reptile of the extinct genus Plesiosaurus, from the Jurassic and Cretaceous periods, having a small head, a long neck, four paddlelike limbs, and a short tail.
- poculiform — having the shape of a cup; cup-shaped.
- podiatrist — a person qualified to diagnose and treat foot disorders.
- point tire — drawn work.
- poker dice — (used with a plural verb) dice that, instead of being marked with spots, carry on their faces a picture or symbol representing the six highest playing cards: ace, king, queen, jack, ten, nine.
- pokerishly — in a pokerish manner
- polar axis — the fixed line, usually horizontal, from which the angle made by the radius vector is measured in a polar coordinate system.
- polarising — to cause polarization in.
- polarizing — to cause polarization in.
- police car — squad car.
- poliovirus — any of three picornaviruses of the genus Enterovirus, having a spherical capsid, infectious to humans and the cause of poliomyelitis.