10-letter words containing r, e, o, p
- pepper-box — a small box with perforations in the top, for sprinkling pepper.
- pepper-pot — Also called Philadelphia pepper pot. a highly seasoned, thick soup made of tripe or other meat, vegetables, and sometimes dumplings.
- peppercorn — the berry of the pepper plant, Piper nigrum, dried and used as a condiment, in pickling, etc.
- pepperroot — toothwort (def 2).
- pepperwood — California laurel (def 1).
- pepperwort — water clover.
- pequot war — a war in 1637 between Connecticut colonists, aided by British soldiers and friendly Indian tribes, and the Pequot Indians under their chief, Sassacus, that resulted in the defeat and dispersion of the Pequot tribe.
- per contra — on the other hand; on the contrary.
- perception — the act or faculty of perceiving, or apprehending by means of the senses or of the mind; cognition; understanding.
- perceptron — 1. A single McCulloch-Pitts neuron. 2. A network of neurons in which the output(s) of some neurons are connected through weighted connections to the input(s) of other neurons. A multilayer perceptron is a specific instance of this.
- perchloric — of or derived from perchloric acid.
- percolator — a kind of coffeepot in which boiling water in a repeated process is forced up a hollow stem, filters down through ground coffee in a sievelike container, and returns to the pot below.
- percursory — passing through rapidly; cursory
- percussion — the striking of one body against another with some sharpness; impact; blow.
- perdu-mont — Mont [mawn] /mɔ̃/ (Show IPA). French name of Monte Perdido.
- peremptory — leaving no opportunity for denial or refusal; imperative: a peremptory command.
- 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.
- perforated — perforated.
- perforatus — a muscle that bends a digit
- 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.
- permafrost — (in arctic or subarctic regions) perennially frozen subsoil.
- 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.
- pernambuco — a state in NE Brazil. 38,000 sq. mi. (98,420 sq. km). Capital: Recife.
- pernicious — causing insidious harm or ruin; ruinous; injurious; hurtful: pernicious teachings; a pernicious lie.
- pernoctate — to stay all night
- 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