10-letter words containing p, o, i, r
- peacherino — peach1 (def 4).
- pectoralis — either of two muscles on each side of the upper and anterior part of the thorax, the action of the larger (pectoralis major) assisting in drawing the shoulder forward and rotating the arm inward, and the action of the smaller (pectoralis minor) assisting in drawing the shoulder downward and forward.
- pejoration — depreciation; a lessening in worth, quality, etc.
- pejorative — having a disparaging, derogatory, or belittling effect or force: the pejorative affix -ling in princeling.
- pelargonic — of or derived from a pelargonium or pelargonic acid.
- pensionary — a pensioner.
- pensioneer — to canvas votes by promising higher pensions
- perception — the act or faculty of perceiving, or apprehending by means of the senses or of the mind; cognition; understanding.
- perchloric — of or derived from perchloric acid.
- percussion — the striking of one body against another with some sharpness; impact; blow.
- perfection — the state or quality of being or becoming perfect.
- perfidious — deliberately faithless; treacherous; deceitful: a perfidious lover.
- perfoliate — having the stem apparently passing through the leaf, owing to congenital union of the basal edges of the leaf round the stem.
- performing — to carry out; execute; do: to perform miracles.
- pergelisol — permafrost.
- periastron — the point at which the stars of a binary system are closest (opposed to apastron).
- periculous — dangerous; perilous
- peridotite — a coarsely granular igneous rock composed chiefly of olivine with an admixture of various other minerals.
- perigonial — of or pertaining to a perigon
- perigonium — the envelope of modified leaves surrounding the antheridia in mosses.
- perigynous — situated around the pistil on the edge of a cuplike receptacle, as stamens or petals.
- perihelion — the point in the orbit of a planet or comet at which it is nearest to the sun.
- perikaryon — cell body.
- perilously — involving or full of grave risk or peril; hazardous; dangerous: a perilous voyage across the Atlantic in a small boat.
- periodical — a magazine or other journal that is issued at regularly recurring intervals.
- periosteum — the normal investment of bone, consisting of a dense, fibrous outer layer, to which muscles attach, and a more delicate, inner layer capable of forming bone.
- periphonic — (of sound reproduction) involving speakers placed at different heights so as to produce sound from all directions
- periphyton — the community of tiny organisms, as protozoans, hydras, insect larvae, and snails, that lives on the surfaces of rooted aquatic plants.
- periscopic — Optics. (of certain lenses in special microscopes, cameras, etc.) giving distinct vision obliquely, or all around, as well as, or instead of, in a direct line.
- peritoneal — the serous membrane lining the abdominal cavity and investing its viscera.
- peritoneum — the serous membrane lining the abdominal cavity and investing its viscera.
- perjurious — the willful giving of false testimony under oath or affirmation, before a competent tribunal, upon a point material to a legal inquiry.
- permeation — to pass into or through every part of: Bright sunshine permeated the room.
- permission — authorization granted to do something; formal consent: to ask permission to leave the room.
- pernicious — causing insidious harm or ruin; ruinous; injurious; hurtful: pernicious teachings; a pernicious lie.
- peroration — a long speech characterized by lofty and often pompous language.
- perovskite — a naturally occurring titanate of calcium, CaTiO 3 , found as yellow, brown, or black cubic crystals, usually in metamorphic rocks.
- peroxidase — any of a class of oxidoreductase enzymes that catalyze the oxidation of a compound by the decomposition of hydrogen peroxide or an organic peroxide.
- peroxidize — to (cause to) become a peroxide
- peroxisome — a cell organelle containing catalase, peroxidase, and other oxidative enzymes and performing essential metabolic functions, as the decomposition of fatty acids and hydrogen peroxide.
- peroxyacid — an acid derived from hydrogen peroxide and containing the –O–O– group, as peroxysulfuric acid, H 2 S 2 O 8 .
- persepolis — an ancient capital of Persia: its imposing ruins are in S Iran, about 30 miles (48 km) NE of Shiraz.
- personalia — the accoutrements, concerns, or intimations that are personal to one
- persuasion — the act of persuading or seeking to persuade.
- perversion — the act of perverting.
- petit four — a small teacake, variously frosted and decorated.
- petitioner — a formally drawn request, often bearing the names of a number of those making the request, that is addressed to a person or group of persons in authority or power, soliciting some favor, right, mercy, or other benefit: a petition for clemency; a petition for the repeal of an unfair law.
- petrópolis — a city in SE Brazil, north of Rio de Janeiro: resort. Pop: 280 000 (2005 est)
- phenformin — a biguanide administered orally in the treatment of diabetes to lower blood concentrations of glucose; it has been largely superseded by metformin. Formula: C10H15N5
- phialiform — having a form like that of a saucer