17-letter words containing r, a, c, i
- pacific northwest — the region of North America lying north of the Columbia River and west of the Rockies
- pacific tree frog — a common terrestrial frog, Hyla regilla, of western North America, having a dark stripe along each side of the head.
- pair of compasses — compass (def 7)
- palace revolution — a challenge to or overthrow of a sovereign or other leader by members of the ruling family or group.
- paleobiochemistry — the study of biochemical processes that occurred in fossil life forms.
- paleoconservative — a person advocating an older, traditional type of conservatism, especially in politics.
- paradoxical sleep — REM sleep.
- paraperiodic acid — the crystalline compound H5IO6, an oxyacid of iodine
- parathyroidectomy — the excision of a parathyroid gland.
- paratungstic acid — an oxyacid acid of tungsten. Formula: H10W12O14
- parted per tierce — tierced.
- particle kinetics — Particle kinetics is the study of the movement of particles and the forces that cause this movement.
- particle velocity — the velocity of a point in a medium that is undergoing wave motion.
- particularization — to make particular.
- pascal's triangle — a triangular arrangement of the binomial coefficients of the expansion (x + y) n for positive integral values of n.
- passenger traffic — number of passengers
- paternalistically — the system, principle, or practice of managing or governing individuals, businesses, nations, etc., in the manner of a father dealing benevolently and often intrusively with his children: The employees objected to the paternalism of the old president.
- pathological liar — a person who tells lies frequently, with no rational motive for doing so.
- patriarchal cross — a Latin cross having a shorter crosspiece above the customary one.
- per capita income — the total income of an area or country divided by the number of people in that area or country
- per procurationem — by one acting as an agent; by proxy.
- periodical cicada — seventeen-year locust.
- peripheral device — peripheral
- pernicious anemia — Pernicious anemia is a very severe blood disease.
- perpetual spinach — a variety of spinach that keeps producing edible leaves
- personal distance — personal space.
- personality clash — friction between two people who have different personalities or points of view
- personnel carrier — a vehicle used for transporting troops
- perspicaciousness — having keen mental perception and understanding; discerning: to exhibit perspicacious judgment.
- petrol filler cap — a small cover that goes over the hole in a vehicle into which you put petrol
- pharmacologically — the science dealing with the preparation, uses, and especially the effects of drugs.
- phenylformic acid — benzoic acid.
- philanthropically — of, pertaining to, engaged in, or characterized by philanthropy; benevolent: a philanthropic foundation.
- phonological rule — an operation in generative phonology that substitutes one sound or class of sounds for another in a phonological derivation.
- photoreactivation — a process that repairs DNA damaged by ultraviolet light using an enzyme that requires visible light.
- phototherapeutics — the branch of therapeutics that deals with the curative use of light rays.
- physical exercise — movements and activities done to keep your body healthy or make it stronger
- physical training — fitness coaching
- piccadilly circus — a traffic circle and open square in W London, England: theater and amusement center.
- picture messaging — Picture messaging is the sending of photographs or pictures from one mobile phone to another.
- pietro da cortona — Pietro da [pye-traw dah] /ˈpyɛ trɔ dɑ/ (Show IPA), (Pietro Berrettini) 1596–1669, Italian painter and architect.
- pinckney's treaty — an agreement in 1795 between Spain and the U.S. by which Spain recognized the 31st parallel as the southern boundary of the U.S. and permitted free navigation of the Mississippi to American ships.
- pinpoint accuracy — extreme accuracy
- pitching rotation — the regular, scheduled succession of starting pitchers designated by a manager: a four-man pitching rotation in September.
- pituitary extract — a preparation of the pituitary gland, used in medicine for the therapeutic effects of its hormones
- plastics industry — the industry that makes plastics
- platinic chloride — chloroplatinic acid.
- pluvius insurance — insurance against rain
- pocket dictionary — a small portable dictionary
- point of purchase — designating or in use at a retail outlet where an item can be purchased; point-of-sale: point-of-purchase displays to entice the buyer.