17-letter words containing p, r, e, d, o
- prolonged-release — A prolonged-release drug delivers a dose of a medication over an extended period of time.
- promenade concert — a concert at which some of the audience stand rather than sit
- proof of identity — a document or documents used to verify someone's identity
- propanedioic acid — a colourless crystalline compound occurring in sugar beet. Formula: C3H4O4,CH2(COOH)2
- proprietary brand — a brand of product that is privately owned and controlled
- protected species — a species of animal or plant which it is forbidden by law to harm or destroy
- pseudo-aggressive — characterized by or tending toward unprovoked offensives, attacks, invasions, or the like; militantly forward or menacing: aggressive acts against a neighboring country.
- pseudo-democratic — pertaining to or of the nature of democracy or a democracy.
- pseudo-historical — of, pertaining to, treating, or characteristic of history or past events: historical records; historical research.
- pseudo-moralistic — a person who teaches or inculcates morality.
- pterygoid process — either of two long bony plates extending downwards from each side of the sphenoid bone within the skull
- pull your head in — be quiet!
- put a dampener on — To put a dampener on something means the same as to put a damper on it.
- pyroligneous acid — a yellowish, acidic, water-soluble liquid, containing about 10 percent acetic acid, obtained by the destructive distillation of wood: used for smoking meats.
- radiation pattern — the graphic representation of the strength and direction of electromagnetic radiation in the vicinity of a transmitting aerial
- radiation therapy — x-rays used as treatment
- radio in the loop — Wireless Local Loop
- radio-transparent — transparent to radiation; invisible in x-ray photographs and under fluoroscopy (opposed to radiopaque).
- radiometeorograph — a device for the automatic transmission by radio of the data from a set of meteorological instruments
- redemption center — a commercial establishment at which trading stamps of a specific brand may be exchanged for merchandise.
- reformed spelling — a revised orthography intended to simplify the spelling of English words, especially to eliminate unpronounced letters, as by substituting thru for through, tho for though, slo for slow, etc.
- refractory period — a short period after a nerve or muscle cell fires during which the cell cannot respond to additional stimulation.
- reported question — A reported question is a question which is reported using a clause beginning with a word such as 'why' or 'whether', as in 'I asked her why she'd done it'.
- reproductive cell — gamete.
- rhodope mountains — a mountain range in SE Europe, in the Balkan Peninsula extending along the border between Bulgaria and Greece. Highest peak: Golyam Perelik (Bulgaria), 2191 m (7188 ft)
- rodolphe kreutzer — Rodolphe [raw-dawlf] /rɔˈdɔlf/ (Show IPA), 1766–1831, French violinist.
- round-trip ticket — a ticket entitling a passenger to travel to his or her destination and back again
- rural development — social or economic activities or initiatives designed to improve the standard of living in areas far away from large towns or cities
- russell's paradox — a paradox of set theory in which an object is defined in terms of a class of objects that contains the object being defined, resulting in a logical contradiction.
- sacrifice paddock — a grassed area allowed to be grazed completely, to be cultivated and resown later
- san pedro channel — a strait between the mainland of SW California and Santa Catalina Island. About 20 miles (32 km) wide.
- secondary process — the conscious mental activity and logical thinking controlled by the ego and influenced by environmental demands.
- secondary product — a product that is not the main product of an industry; a by-product
- self-reproduction — the act or process of reproducing.
- sexual dimorphism — the condition in which the males and females in a species are morphologically different, as with many birds.
- shetland pullover — a thick woollen sweater made from Shetland wool
- six-speed gearbox — a gearbox containing a system of six gears
- sleep deprivation — a condition in which you have not had enough sleep
- sodium propionate — a transparent, crystalline, water-soluble powder, C 3 H 5 NaO 2 , used in foodstuffs to prevent mold growth, and in medicine as a fungicide.
- sodium pyroborate — borax1 .
- sound spectrogram — a graphic representation, produced by a sound spectrograph, of the frequency, intensity, duration, and variation with time of the resonance of a sound or series of sounds.
- southern sporades — a group of Greek islands in the Aegean, including the Dodecanese, lying off the SW coast of Turkey
- spectroradiometer — an instrument for determining the radiant-energy distribution in a spectrum, combining the functions of a spectroscope with those of a radiometer.
- spectrum disorder — any of a group of disorders each having symptoms that occur on a continuum and certain features that are shared along its spectrum but that manifest in markedly different forms and degrees. See also autism spectrum disorder.
- speed restriction — the maximum speed allowed for road vehicles, trains, or other vehicles
- spiny-headed worm — any of a small group of endoparasites of the phylum Acanthocephala, as larvae parasitic in insects and crustaceans and as adults in various vertebrates.
- split keyboarding — the act or practice of editing data from one terminal on another terminal
- spotted sandpiper — a North American sandpiper, Actitis macularia, that has brownish-gray upper parts and white underparts, and is spotted with black in the summer.
- spread your wings — if you spread your wings, you do something new and rather difficult or move to a new place, because you feel more confident in your abilities than you used to and you want to gain wider experience
- sulfurated potash — a yellowish-brown mixture consisting mainly of potassium polysulfides and potassium thiosulfate, used in treating mange.