12-letter words containing p, a, r, i
- protreptical — didactic
- proverbially — of, relating to, or characteristic of a proverb: proverbial brevity.
- providential — of, relating to, or resulting from divine providence: providential care.
- provincially — belonging or peculiar to some particular province; local: the provincial newspaper.
- provisionary — providing or serving for the time being only; existing only until permanently or properly replaced; temporary: a provisional government.
- provitamin a — carotene.
- prudentially — of, pertaining to, characterized by, or resulting from prudence.
- prussic acid — weakly acidic extremely poisonous aqueous solution of hydrogen cyanide
- pseudorabies — a highly contagious, usually fatal disease of cattle, sheep, and other animals, caused by the herpesvirus Herpes suis, and characterized by severe pruritus and progressive central nervous system involvement sometimes including an aggressive excitement phase.
- psi particle — any of a family of mesons consisting of a charmed quark and a charmed antiquark.
- psychiatrist — a physician who practices psychiatry.
- pteridomania — an excessive enthusiasm for ferns
- pteroic acid — a crystalline acid found in spinach
- pterosaurian — a pterosaur
- puck-carrier — the player who has the puck and moves it along.
- puerto rican — 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.
- pulverizable — that can be pulverized
- puncturation — the act of puncturing
- punditocracy — influential media pundits collectively.
- purification — to make pure; free from anything that debases, pollutes, adulterates, or contaminates: to purify metals.
- purlin plate — (in a curb roof) a purlin at the top of a lower slope supporting the ends of the upper rafters at the curb.
- putrefaction — the act or process of putrefying; the anaerobic decomposition of organic matter by bacteria and fungi that results in obnoxiously odorous products; rotting.
- putrefactive — the act or process of putrefying; the anaerobic decomposition of organic matter by bacteria and fungi that results in obnoxiously odorous products; rotting.
- pyramid peak — a mountain in W central Colorado, in the Elk Range, in the S Rocky Mountains. 14,018 feet (4276 meters).
- pyramidology — a belief system based on the supposed occult significance of the Egyptian pyramids
- pyrazinamide — a substance, C 5 H 5 N 3 O, used in the treatment of tuberculosis.
- pyridoxamine — a metabolic form of pyridoxine
- pyrithiamine — an antivitamin that causes thiamine deficiency
- pyritohedral — of or relating to a pyritohedron
- pyrochemical — pertaining to or producing chemical change at high temperatures.
- pyromagnetic — (formerly) thermomagnetic (def 1).
- pyromaniacal — a compulsion to set things on fire.
- pyruvic acid — a water-soluble liquid, C 3 H 4 O 3 , important in many metabolic and fermentative processes, having an odor resembling that of acetic acid, prepared by the dehydration of tartaric acid: used chiefly in biochemical research.
- quadraphonic — of, noting, or pertaining to the recording and reproduction of sound over four separate transmission or direct reproduction channels instead of the customary two of the stereo system: a quadraphonic recording.
- quadraplegic — quadriplegic.
- quadriphonic — quadraphonic.
- quadriplegia — paralysis of all four limbs or of the entire body below the neck.
- quadriplegic — a person with quadriplegia.
- quadrophonic — Alternative spelling of quadraphonic.
- quarterpipes — Plural form of quarterpipe.
- quiz program — a radio or television program in which contestants compete, often for prizes, by answering questions.
- rabbit punch — a short, sharp blow to the nape of the neck or the lower part of the skull.
- radar picket — a ship, vehicle, or aircraft stationed at a distance from a protected force to increase radar detection range.
- radiata pine — a pine tree, Pinus radiata, native to the western USA. but grown in Australia, New Zealand, and elsewhere to produce building timber
- radiator cap — a cap in the opening of a device for cooling an internal-combustion engine, through which coolant liquid can be added
- radiographer — X-ray technician
- radioisotope — a radioactive isotope, usually artificially produced: used in physical and biological research, therapeutics, etc.
- radiophonist — a person who produces radiophonic music
- radiotherapy — treatment of disease by means of x-rays or of radioactive substances.
- railroad pen — a ruling pen for drawing two parallel lines.