10-letter words containing p, e, r, i, o
- 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
- piano wire — a very thin steel wire of high tensile strength.
- pianoforte — a piano.
- pickleworm — the larva of a pyralid moth, Diaphania nitidalis, that bores into the stem and fruit of squash, cucumber, and other cucurbitaceous plants.
- piesporter — any of various white wines from the area around the village of Piesport in the Moselle valley in Germany
- piezometer — any of several instruments for measuring the pressure of a fluid or the compressibility of a substance when subjected to such a pressure.
- piezometry — the measurement of pressure or compressibility.
- pileorhiza — a calyptra
- piliferous — having or producing hair.
- pin clover — alfilaria.