15-letter words containing a, r, o, y, s
- pyrocrystalline — crystallized from a molten magma or highly heated solution.
- query expansion — (information science) Adding search terms to a user's search. Query expansion is the process of a search engine adding search terms to a user's weighted search. The intent is to improve precision and/or recall. The additional terms may be taken from a thesaurus. For example a search for "car" may be expanded to: car cars auto autos automobile automobiles. The additional terms may also be taken from documents that the user has specified as being relevant; this is the basis for the "more like this" feature of some search engines. The extra terms can have positive or negative weights.
- radar astronomy — the branch of astronomy that uses radar to map the surfaces of planetary bodies, as the moon and Venus, and to determine periods of rotation.
- radio astronomy — the branch of astronomy that utilizes extraterrestrial radiation in radio wavelengths rather than visible light for the study of the universe.
- radio sono-buoy — a buoy equipped to detect underwater noises and transmit them by radio
- railway station — train stop, railroad station
- ray of sunshine — beam of sunlight
- rayside-balfour — a town in S Ontario, in S Canada.
- regulatory risk — a risk to which private companies are subject, arising from the possibility of legislation or regulations that will affect business being adopted by a government
- remonstratingly — in an remonstrating or dissenting manner
- remonstratively — in a remonstrative or expostulatory manner
- resurrectionary — pertaining to or of the nature of resurrection.
- rhyme or reason — If something happens or is done without rhyme or reason, there seems to be no logical reason for it to happen or be done.
- right of asylum — the right of alien fugitives to protection or nonextradition in a country or its embassy.
- rimsky-korsakov — Nicolai Andreevich [nyi-kuh-lahy uhn-drye-yi-vyich] /nyɪ kəˈlaɪ ʌnˈdryɛ yɪ vyɪtʃ/ (Show IPA), 1844–1908, Russian composer.
- rockrose family — the plant family Cistaceae, characterized by herbaceous plants and shrubs having simple, usually opposite leaves, solitary or clustered flowers, and capsular fruit, and including the frostweed, pinweed, and rockrose.
- rocky mountains — mountain range in USA and Canada
- rogation sunday — the fifth Sunday after Easter; it sees the start of the supplications that are continued during the following Monday, Tuesday and Wednesday
- rogues' gallery — a collection of portraits of criminals and suspects maintained by the police for purposes of identification.
- royal enclosure — at the Royal Ascot horse-race meeting, an area of Ascot racecourse which is reserved for the Royal Family, members, and their guests
- royal engineers — a branch of the British army that undertakes the building of fortifications, mines, bridges, and other engineering works
- royal worcester — Worcester china made after 1862
- rural sociology — the sociological study of life in rural areas and the effects of ruralization.
- saccharomycetes — a collective name for yeasts
- sanitary cordon — cordon sanitaire.
- saprophytically — any organism that lives on dead organic matter, as certain fungi and bacteria.
- sarcenchymatous — relating to the connective tissue of some sponges
- say a few words — to give a brief speech
- secondary cause — a cause which is not the primary or ultimate cause
- secondary color — a color, as orange, green, or violet, produced by mixing two primary colors.
- secondary group — a group of people with whom one's contacts are detached and impersonal.
- secondary metal — metal derived wholly or in part from scrap.
- secondary xylem — xylem derived from the cambium during secondary growth.
- self-regulatory — Self-regulatory systems, organizations, or activities are controlled by the people involved in them, rather than by outside organizations or rules.
- self-revelatory — displaying, exhibiting, or disclosing one's most private feelings, thoughts, etc.: an embarrassingly self-revealing autobiography.
- semantic memory — the recollection of facts and concepts
- semidocumentary — a film or television programme that is fictional but includes many factual events or details
- semipornography — partial pornography; material that is almost pornographic
- septentrionally — northwards; in the direction of the north
- serial monogamy — a form of monogamy characterized by several successive, short-term marriages over the course of a lifetime.
- sharing economy — a system in which people rent, borrow, or share commodities, services, and resources owned by individuals, usually with the aid of online technology, in an effort to save money, cut costs, and reduce waste.
- silent majority — the U.S. citizens who supported President Nixon's policies but who were not politically vocal, outspoken, or active: considered by him to constitute a majority.
- simple majority — less than half of the total votes cast but more than the minimum required to win, as when there are more than two candidates or choices.
- sinorespiratory — of, relating to, or affecting the paranasal sinuses and the respiratory tract.
- slumpflationary — of or relating to slumpflation
- soapbox oratory — public speaking typical of soapbox orators
- social security — (usually initial capital letters) a program of old-age, unemployment, health, disability, and survivors insurance maintained by the U.S. federal government through compulsory payments by specific employer and employee groups.
- socialist party — a U.S. political party advocating socialism, formed about 1900 chiefly by former members of the Social Democratic Party and the Socialist Labor Party.
- socioculturally — from a sociocultural point of view
- somatic therapy — any of a group of treatments presumed to act on biological factors leading to mental illness.