10-letter words containing p, o, i, r
- pyrethroid — any of several synthetic compounds that are similar to but more persistent than natural pyrethrins.
- pyridoxine — a derivative of pyridine, C 8 H 1 1 NO 3 , occurring in whole-grain cereals, meats, fish, etc., and also made synthetically: required for the prevention of pellagra and the formation of hemoglobin; vitamin B 6 .
- pyrolusite — a common mineral, manganese dioxide, MnO 2 , the principal ore of manganese, used in various manufactures, as a decolorizer of brown or green tints in glass, and as a depolarizer in dry-cell batteries.
- pyromaniac — a compulsion to set things on fire.
- pyromantic — divination by fire, or by forms appearing in fire.
- pyromeride — a devitrified form of rhyolite, having a nodular appearance and spherulitic texture
- pyrophobia — an abnormal fear of fire.
- pyrophobic — an abnormal fear of fire.
- pyrophoric — capable of igniting spontaneously in air.
- pyroxenite — any rock composed essentially, or in large part, of pyroxene of any kind.
- pyroxenoid — any of a group of triclinic silicates including wollastonite, rhodonite, and pectolite
- pyrrhonism — the Skeptic doctrines of Pyrrho and his followers.
- pyrrhotite — a common mineral, iron sulfide, approximately FeS but variable because of a partial absence of ferrous ions, occurring in massive and in crystal forms with a bronze color and metallic luster; magnetic pyrites: generally slightly magnetic.
- quadripole — an electric circuit with two input and two output terminals
- qwertyuiop — Filler text.
- r-dropping — (of certain pronunciations of English) characterized by the absence of the sound (r) in postvocalic position in the same syllable, as often encountered in speech identified with the southern and eastern United States and with most of England; r-less.
- radio play — a play written for broadcasting on radio
- radiograph — Also called shadowgraph. a photographic image produced by the action of x-rays or nuclear radiation.
- radiopager — a small radio receiver fitted with a buzzer to alert a person to telephone their home, office, etc, to receive a message
- radiopaque — opaque to radiation; visible in x-ray photographs and under fluoroscopy (opposed to radiotransparent).
- radiophare — a radiotelegraphic station used by vessels to determine their positions; radio beacon.
- radiophone — a radiotelephone.
- radiophoto — an image created by radio waves rather than light
- radioscope — an instrument, such as a fluoroscope, capable of detecting radiant energy
- radioscopy — the examination of objects opaque to light by means of another form of radiation, usually x-rays.
- rat poison — substance toxic to rodents
- readoption — the adoption of something or someone again
- reciprocal — given or felt by each toward the other; mutual: reciprocal respect.
- redemption — an act of redeeming or atoning for a fault or mistake, or the state of being redeemed.
- redisposed — to give a tendency or inclination to; incline: His temperament disposed him to argue readily with people.
- reef point — one of several short lengths of line stitched through a sail for tying a reef
- regrouping — to form into a new or restructured group or grouping.
- reimprison — to confine in or as if in a prison.
- reparation — the making of amends for wrong or injury done: reparation for an injustice.
- repertoire — the list of dramas, operas, parts, pieces, etc., that a company, actor, singer, or the like, is prepared to perform.
- repetition — the act of repeating, or doing, saying, or writing something again; repeated action, performance, production, or presentation.
- replicator — Any construct that acts to produce copies of itself; this could be a living organism, an idea (see meme), a program (see quine, worm, wabbit, fork bomb, and virus), a pattern in a cellular automaton (see life), or (speculatively) a robot or nanobot. It is even claimed by some that Unix and C are the symbiotic halves of an extremely successful replicator; see Unix conspiracy.
- replotting — a secret plan or scheme to accomplish some purpose, especially a hostile, unlawful, or evil purpose: a plot to overthrow the government.
- repointing — the act or process of repairing the joints of (brickwork, masonry, etc) with mortar or cement
- repolarize — to polarize again or become polarized again
- reposition — the act of depositing or storing.
- repository — a receptacle or place where things are deposited, stored, or offered for sale: a repository for discarded clothing.
- repoussoir — a figure or object in the extreme foreground: used as a contrast and to increase the illusion of depth.
- repression — the act of repressing; state of being repressed.
- reptilious — like a reptile, resembling or characteristic of a reptile
- reputation — the estimation in which a person or thing is held, especially by the community or the public generally; repute: a man of good reputation.
- resorption — the destruction, disappearance, or dissolution of a tissue or part by biochemical activity, as the loss of bone or of tooth dentin.
- respirator — a masklike device, usually of gauze, worn over the mouth, or nose and mouth, to prevent the inhalation of noxious substances or the like.
- responsion — the act of responding or answering.
- responsive — responding especially readily and sympathetically to appeals, efforts, influences, etc.: a responsive government.