15-letter words containing p, r, e, i, o
- surreptitiously — obtained, done, made, etc., by stealth; secret or unauthorized; clandestine: a surreptitious glance.
- symmetric group — the group of all permutations of a finite set.
- symphony writer — a composer of an extended large-scale orchestral composition, usually with several movements, at least one of which is in sonata form
- synectics group — a group of people of varied background that meets to attempt creative solutions of problems through the unrestricted exercise of imagination and the correlation of disparate elements.
- tetrasporangium — a sporangium containing four asexual spores.
- text processing — the handling of alphabetic characters by a computer
- the perigordian — the Perigordian culture
- the phanerozoic — the Phanerozoic era
- the prime mover — God, esp when considered as a first cause
- the proprieties — the standards of behaviour considered correct by polite society
- the proterozoic — the Proterozoic Eon or its rocks
- the riot police — the section of the police force that is trained to deal with people who cause trouble in public places
- theriomorphosis — transformation into an animal form, often associated with mythological characters
- thermoperiodism — the effect on an organism of rhythmic fluctuations in temperature.
- threshold price — the highest price a retailer is allowed to sell a particular good at
- total depravity — the Calvinist doctrine that humankind's entire nature, including its reason, is corrupt or sinful as a result of the Fall and that people are therefore completely dependent on God for regeneration.
- trainspotterish — obsessed with trivial details, esp of a subject generally considered uninteresting
- trapdoor spider — any of various, often large, spiders (esp. family Ctenizidae) that dig a burrow and cover the entrance with a hinged lid like a trapdoor
- treaty of paris — a treaty of 1763 signed by Britain, France, and Spain that ended their involvement in the Seven Years' War
- trifluoperazine — a compound, C 21 H 24 F 3 N 3 S, used as an antipsychotic.
- ultramicroscope — an instrument that uses scattering phenomena to detect the position of objects too small to be seen by an ordinary microscope.
- umbrella policy — An umbrella policy is a policy that provides excess limits and gives additional excess coverage over the normal limits and coverage of liability policies.
- unary operation — an operation in a mathematical system by which one element is used to yield a single result, as squaring or taking the square root.
- uncomplimentary — of the nature of, conveying, or expressing a compliment, often one that is politely flattering: a complimentary remark.
- uncomprehending — to understand the nature or meaning of; grasp with the mind; perceive: He did not comprehend the significance of the ambassador's remark.
- uncomprehensive — of large scope; covering or involving much; inclusive: a comprehensive study of world affairs.
- uncompromisable — that cannot or should not be compromised
- uncooperatively — in an uncooperative or unhelpful manner
- uncopyrightable — not able to be copyrighted
- uncorresponding — identical in all essentials or respects: corresponding fingerprints.
- under suspicion — suspected of a crime
- underpopulation — having a population lower than is normal or desirable.
- underproduction — production that is less than normal or than is required by the demand.
- unpolished rice — a partly refined rice, hulled and deprived of its germ but retaining some bran.
- unprepossessing — that impresses favorably; engaging or attractive: a confident and prepossessing young man.
- unpretentiously — without pretension
- unprogressively — in an unprogressive manner
- unproportionate — proportioned; being in due proportion; proportional.
- unprotestantize — to make something (e.g. a church, country, etc) a religion other than Protestant
- unsportsmanlike — a man who engages in sports, especially in some open-air sport, as hunting, fishing, racing, etc.
- upper arlington — a city in central Ohio, near Columbus.
- upwardly mobile — See under vertical mobility (def 1).
- vernier compass — a compass on a transit (vernier transit) having a vernier for adjusting magnetic bearings to read as true bearings.
- vespertilionine — of or relating to the bats of the subfamily Vespertilioninae, common in temperate regions and including most familiar species.
- vine phylloxera — a homopterous insect, Phylloxera vitifolia, typically feeding on vine juices
- viper's bugloss — the blueweed.
- visible exports — goods sold to a foreign country or countries
- visible imports — products that a company or country buys from other countries
- voting precinct — one of several areas, each containing a polling place, into which a town or city is split for voting purposes
- water pollution — the pollution of the sea and rivers