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11-letter words containing p, o, i, r

  • prothoracic — relating to an insect's prothorax
  • prothrombin — a plasma protein involved in blood coagulation that on activation by factors in the plasma is converted to thrombin.
  • proto-doric — of or relating to architecture, as in certain Egyptian tombs, supposedly anticipating the Grecian Doric order.
  • proto-ionic — of or relating to architecture supposedly anticipating the Grecian Ionic order.
  • protocolist — a person who drafts protocols
  • protocolize — to make a protocol of
  • protolithic — noting or pertaining to stone implements selected according to suitability of the form to a particular purpose without definite shaping on the part of the user.
  • protonation — the act of providing an atom, molecule, or ion with a proton
  • protopathic — noting or pertaining to a general, nondiscriminating responsiveness to pain or temperature stimuli (opposed to epicritic).
  • protopectin — any of the class of water-insoluble pectic substances that are found in the rind of citrus fruits or in apple peels and that are hydrolyzed to pectin or pectic acid.
  • protophilic — having or involving an affinity for hydrogen ions (protons)
  • protophytic — pertaining to the class Protophyta
  • protopodite — the basal portion of a two-branched crustacean leg or other appendage.
  • prototyping — The creation of a model and the simulation of all aspects of a product. CASE tools support different degrees of prototyping. Some offer the end-user the ability to review all aspects of the user interface and the structure of documentation and reports before code is generated.
  • protractile — capable of being protracted, lengthened, or protruded.
  • protraction — the act of protracting; prolongation; extension.
  • protractive — to draw out or lengthen, especially in time; extend the duration of; prolong.
  • protrusible — able to be thrust outwards
  • provenience — provenance; origin; source.
  • provide for — support financially
  • providences — a seaport in and the capital of Rhode Island, in the NE part, at the head of Narragansett Bay.
  • providently — having or showing foresight; providing carefully for the future.
  • provisional — providing or serving for the time being only; existing only until permanently or properly replaced; temporary: a provisional government.
  • provisioned — a clause in a legal instrument, a law, etc., providing for a particular matter; stipulation; proviso.
  • provisioner — a clause in a legal instrument, a law, etc., providing for a particular matter; stipulation; proviso.
  • provocation — the act of provoking.
  • provocative — tending or serving to provoke; inciting, stimulating, irritating, or vexing.
  • provostship — the office of a provost
  • proximately — next; nearest; immediately before or after in order, place, occurrence, etc.
  • proximation — next; nearest; immediately before or after in order, place, occurrence, etc.
  • proximities — nearness in place, time, order, occurrence, or relation.
  • proxy fight — a contest between factions of stockholders in a company, in which each group attempts to gain control by soliciting signed proxy statements for sufficient votes.
  • pruriginous — of, relating to, or causing prurigo.
  • prusik loop — a loop formed with a sliding knot that locks under pressure in which a climber can place his foot in order to stand or ascend a rope
  • pseudoprime — A backgammon prime (six consecutive occupied points) with one point missing. This term is an esoteric pun derived from a mathematical method that, rather than determining precisely whether a number is prime (has no divisors), uses a statistical technique to decide whether the number is "probably" prime. A number that passes this test is called a pseudoprime. The hacker backgammon usage stems from the idea that a pseudoprime is almost as good as a prime: it does the job of a prime until proven otherwise, and that probably won't happen.
  • pteridology — the branch of botany dealing with ferns and related plants, as the horsetails and club mosses.
  • pteropodium — the foot of a pteropod.
  • public room — a lounge or other room that is open to all, especially in a hotel or on a ship.
  • puerto rico — an island in the central West Indies: a commonwealth associated with the U.S. 3435 sq. mi. (8895 sq. km). Capital: San Juan. Abbreviation: P.R., PR.
  • pulveration — the reduction of something to powder
  • pupil power — the influence of or the increased status of the beliefs or actions of pupils
  • pure merino — a free settler rather than a convict
  • purgatorial — removing or purging sin; expiatory: purgatorial rites.
  • purgatorian — a person who believes in purgatory
  • purificator — the linen cloth used by the celebrant for wiping the chalice after each communicant has drunk from it.
  • put on airs — a mixture of nitrogen, oxygen, and minute amounts of other gases that surrounds the earth and forms its atmosphere.
  • pycniospore — the spore produced in a pycnium.
  • pyrobitumen — any of the dark, solid hydrocarbons including peat, coal, and bituminous shale.
  • pyroclastic — composed chiefly of fragments of volcanic origin, as agglomerate, tuff, and certain other rocks; volcaniclastic.
  • pyrogenetic — heat-producing
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