15-letter words containing p, o, s, e, r
- superpatriotism — the quality of being superpatriotic
- superphenomenon — a phenomenon that is beyond the typical qualities of phenomena
- supporting role — acting: secondary part
- suppressor grid — an electrode placed between the screen grid and anode of a valve. Its negative potential, relative to both screen and anode, prevents secondary electrons from the anode reaching the screen
- supreme council — the legislature of the former Soviet Union and its successor states, consisting of an upper house (Soviet of the Union or Council of the Union) whose delegates are elected on the basis of population, and a lower house (Soviet of Nationalities or Council of Nationalities) whose delegates are elected to represent the various nationalities.
- surge protector — a small device to protect a computer, telephone, television set, or the like from damage by high-voltage electrical surges.
- surreptitiously — obtained, done, made, etc., by stealth; secret or unauthorized; clandestine: a surreptitious glance.
- sweep the board — (in gambling) to win all the cards or money
- 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.
- system operator — a person who maintains a computer system or network, especially one who operates a computer bulletin board.
- telestereoscope — a binocular optical instrument used for stereoscopic viewing of distant objects; a small range finder.
- tetrasporangium — a sporangium containing four asexual spores.
- text processing — the handling of alphabetic characters by a computer
- thalassographer — a person who studies the sea; an oceanographer
- thalassotherapy — the use of sea water and marine products as a therapeutic treatment
- the proprieties — the standards of behaviour considered correct by polite society
- theory of types — a theory advanced by Bertrand Russell to avoid the liar paradox, Russell's paradox, etc, in which a class of expressions or of the entities they represent can all enter into the same syntactic relations
- theriomorphosis — transformation into an animal form, often associated with mythological characters
- thermoperiodism — the effect on an organism of rhythmic fluctuations in temperature.
- thought process — thinking, train of thought
- threshold price — the highest price a retailer is allowed to sell a particular good at
- to good purpose — with a good result or effect; advantageously
- to take up arms — If one group or country takes up arms against another, they prepare to attack and fight them.
- trainspotterish — obsessed with trivial details, esp of a subject generally considered uninteresting
- transportedness — the quality or state of being carried away with pleasure or rapture
- 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
- trustee process — (in New England) garnishment (def 1).
- turgor pressure — the pressure exerted on a plant cell wall by water passing into the cell by osmosis
- two-star petrol — leaded petrol that has a low octane number; inferior leaded petrol
- ultramicroscope — an instrument that uses scattering phenomena to detect the position of objects too small to be seen by an ordinary microscope.
- un-presumptuous — full of, characterized by, or showing presumption or readiness to presume in conduct or thought, as by saying or doing something without right or permission.
- uncomprehensive — of large scope; covering or involving much; inclusive: a comprehensive study of world affairs.
- uncompromisable — that cannot or should not be compromised
- uncorresponding — identical in all essentials or respects: corresponding fingerprints.
- under suspicion — suspected of a crime
- undercompensate — to compensate or pay less than is fair, customary, or expected.
- 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
- unprotected sex — an act of sexual intercourse or sodomy performed without the use of a condom, thus involving the risk of sexually transmitted diseases
- unprotectedness — the state of being unprotected or defenceless against attack
- 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.
- up one's street — (just) what one knows or likes best
- up to your ears — If you are up to your ears in something, it is taking up all of your time, attention, or resources.
- up to your eyes — If you say that you are up to your eyes in something, you are emphasizing that you have a lot of it to deal with, and often that you are very busy.