13-letter words containing m, r, p
- peppered moth — a European geometrid moth, Biston betularia, occurring in a pale grey speckled form in rural areas and a black form in industrial regions
- perambulation — to walk through, about, or over; travel through; traverse.
- perfect rhyme — rhyme of two words spelled or pronounced identically but differing in meaning, as rain, reign; rich rhyme.
- perfect storm — a detrimental or calamitous situation or event arising from the powerful combined effect of a unique set of circumstances: a perfect storm battering corporate pension plans.
- perfectionism — any of various doctrines holding that religious, moral, social, or political perfection is attainable.
- perichondrium — the membrane of fibrous connective tissue covering the surface of cartilages except at the joints.
- perilymphatic — the fluid between the bony and membranous labyrinths of the ear.
- perimenopause — the period leading up to the menopause during which some of the symptoms associated with menopause may be experienced
- peripheralism — the explanation of psychological events emphasizing peripheral human functions, as those of skeletal muscles or the sex organs, rather than cognition or other processes of the central nervous system.
- permanent set — the change in shape of a material that results when the load to which it is subjected causes the elastic limit to be exceeded and is then removed
- permanent way — the roadbed and track of a railroad.
- persian melon — a round variety of muskmelon having a green, reticulate, unribbed rind and orange flesh.
- perspectivism — the doctrine that reality is known only in terms of the perspectives of it seen by individuals or groups at particular moments.
- petrochemical — a chemical substance obtained from petroleum or natural gas, as gasoline, kerosene, or petrolatum.
- phalansterism — a model of society in which members of a community live in the same space and share common belongings
- phantasmagory — phantasmagoria.
- pharmaceutics — a pharmaceutical preparation or product.
- pharmacognosy — materia medica (def 2).
- pharmacologic — the science dealing with the preparation, uses, and especially the effects of drugs.
- pharmacopoeia — a book published usually under the jurisdiction of the government and containing a list of drugs, their formulas, methods for making medicinal preparations, requirements and tests for their strength and purity, and other related information.
- pharyngectomy — excision of part or all of the pharynx.
- phase diagram — a graph, usually using temperature, pressure, and composition as coordinates, indicating the regions of stability of the various phases of a system.
- phenmetrazine — a compound, C 1 1 H 1 5 NO, used chiefly to control the appetite in the treatment of obesity.
- photochromism — the reversible transformation of something's colour due to exposure to electromagnetic radiation such as sunlight
- photocomposer — a machine for setting type photographically.
- phototelegram — a telegram that is sent by means of phototelegraphy
- phrase marker — (in generative grammar) a representation of the constituent structure of a sentence, using a tree diagram or labeled bracketing.
- phrygian mode — an authentic church mode represented on the white keys of a keyboard instrument by an ascending scale from E to E.
- physharmonica — a keyboard musical instrument fitted with free reeds, and which is an early form of harmonium
- pickup camper — camper (def 3).
- picramic acid — a red, crystalline substance, C 6 H 5 N 3 O 5 , soluble in alcohol, used chiefly in the manufacture of azo dyes.
- picture frame — mount for a picture
- piers plowman — (The Vision Concerning Piers Plowman) an alliterative poem written in three versions (1360–99), ascribed to William Langland.
- pilaster mass — an engaged pier, usually plain, used as a buttress.
- pimple copper — a form of copper matte about 80 percent pure, somewhat less refined than blister copper.
- pink bollworm — the larva of a gelechiid moth, Pectinophora gossypiella, that feeds on the seeds of the bolls of cotton and was introduced into cotton-growing regions of the world from Asia.
- piroplasmosis — babesiosis.
- pistol shrimp — any common shrimp of the family Alphaeidae, distinguished by the snapping sound made by its enlarged claw.
- pivot grammar — a loose grammar said to govern two-word utterances by children
- place of arms — an area in a fortress or a fortified town where troops could assemble for defense.
- placer mining — mining of placer deposits by washing, dredging, or other hydraulic methods
- plagiotropism — plagiotropic tendency or growth.
- plant hormone — an organic chemical, as auxin, produced by plant cells and functioning at various sites to regulate growth, turning, metabolic processes, etc.
- plasma screen — A plasma screen is a type of thin television screen or computer screen that produces high-quality images.
- plasmodiocarp — a fruiting body of certain myxomycetes.
- platform game — a type of computer game that is played by moving a figure on the screen through a series of obstacles and problems
- platform shoe — a shoe with a platform.
- platiniridium — a natural alloy composed chiefly of platinum and iridium.
- play for time — a dramatic composition or piece; drama.
- pleasure dome — a large building, facility, or place used for recreation.