12-letter words containing u, p, i
- perionychium — the epidermis surrounding the base and sides of a fingernail or toenail.
- periostracum — the external, chitinlike covering of the shell of certain mollusks that protects the limy portion from acids.
- periselenium — the closest point of the orbit of a spacecraft to the moon
- peritrichous — (of bacteria) having a uniform distribution of flagella over the body surface.
- perniciously — causing insidious harm or ruin; ruinous; injurious; hurtful: pernicious teachings; a pernicious lie.
- perpetualism — a belief in the permanence of a given thing; the belief that a given thing (e.g. the world, a political system) will last forever
- perpetualist — someone who holds to any form of perpetualism
- perpetuality — continuing or enduring forever; everlasting.
- perpetuating — to make perpetual.
- perpetuation — to make perpetual.
- perquisition — an intensive and meticulous examination, pursuit, or hunt for something
- persian gulf — strait in the Indian Ocean
- persuasively — able, fitted, or intended to persuade: a very persuasive argument.
- persulphuric — denoting a type of acid
- pertinacious — holding tenaciously to a purpose, course of action, or opinion; resolute.
- perturbation — the act of perturbing.
- perturbative — having a tendency to perturb; disturbing.
- pervicacious — extremely willful; obstinate; stubborn.
- petaliferous — bearing or having petals.
- petit beurre — a small, usually oblong butter cookie.
- petrobrusian — a member of a 12th-century sect in S France that rejected the Mass, infant baptism, prayers for the dead, sacerdotalism, the veneration of the cross, and the building of churches.
- pfund series — a series of lines in the infrared spectrum of hydrogen.
- pharmaceutic — pertaining to pharmacy or pharmacists.
- phi-function — Euler's phi-function.
- philadelphus — (Philadelphus) king of Pergamum c159–138 b.c.
- phillipsburg — a city in NW New Jersey, on the Delaware River.
- phillumenist — a collector of matchbooks and matchboxes.
- phosphaturia — the presence of an excessive quantity of phosphates in the urine.
- photoinduced — induced by light.
- photophilous — of or relating to an organism, as a plant, that is receptive to, seeks, or thrives in light.
- picker-upper — something that restores one's depleted energy or depressed spirits; pick-me-up.
- picnic lunch — a meal that you take and eat outdoors
- picornavirus — any of a group of small, RNA-containing viruses of the family Picornaviridae, infectious to humans and other animals, and including the poliovirus and the rhinoviruses that cause the common cold.
- picture book — a book consisting mainly or entirely of pictures, especially one for children who have not yet learned to read.
- picture card — face card
- picture desk — the department at a magazine or newspaper publisher, that deals with photographs for the paper or magazine
- picture disc — a phonograph record with a picture on the vinyl.
- picture mold — a molding near a ceiling from which pictures can be suspended.
- picture rail — bar from which pictures are hung
- picture sash — a large window sash, as for a picture window.
- picture show — motion picture.
- picture tube — a cathode-ray tube with a screen at one end on which images are reproduced.
- picturephone — a type of telephone where users can see each other as they talk, through the transmission of video images
- piet-my-vrou — a cuckoo, Notococcyx solitarius, having a red breast
- pig industry — the people and activities involved in making pork products
- pig launcher — A pig launcher is a device which starts a pig moving without interrupting flow.
- pilot burner — pilot light (def 1).
- pinch runner — a player sent into a game to replace a base runner.
- pinturicchio — real name Bernardino di Betto. ?1454–1513, Italian painter of the Umbrian school
- pipe routing — Pipe routing is the planning of pipeline layout, which includes considerations of neatness, economy, and safety.