21-letter words that end in ion
- statutory corporation — a company or other body set up by statute
- statutory declaration — a declaration made under statutory authority before a justice of the peace or commissioner for oaths which may in certain cases be substituted for a statement on oath
- student participation — the extent to which students participate or involve themselves in a class, course, etc
- subliminal perception — perception of or reaction to a stimulus that occurs without awareness or consciousness
- substitution reaction — the replacement of an atom or group of atoms in a compound by another atom or group.
- surface of projection — the surface upon which an image or a set of points is projected.
- surface of revolution — a surface formed by revolving a plane curve about a given line.
- sympathetic vibration — a vibration induced by resonance.
- synchrotron radiation — electromagnetic radiation emitted by charged particles as they pass through magnetic fields.
- teacher certification — official qualifications for educators
- temperature inversion — inversion (def 12).
- tenure track position — a position or office that carries with it the opportunity to eventually obtain tenure or the right to permanent employment
- terrestrial radiation — long-wave electromagnetic radiation in the form of heat emitted from the earth's surface and atmosphere.
- the acting profession — actors considered as a group
- the birth of a nation — an American film (1915), directed by D. W. Griffith.
- the executive mansion — the White House
- the oldest profession — prostitution
- the press association — the national news agency for the United Kingdom and Ireland
- the scout association — a worldwide movement for boys or (in some countries) girls, founded as the Boy Scouts in England in 1908 by Lord Baden-Powell with the aim of developing character and responsibility
- thermal decomposition — Thermal decomposition is the process in which a chemical species breaks down when its temperature is increased.
- thermal power station — a power station in which heat is converted into electricity
- ticker-tape reception — (mainly in New York) the showering of the motorcade of a distinguished politician, visiting head of state, etc, with ticker tape as a sign of welcome
- transport segregation — Transport segregation is when particles from a mixture separate because the mixture vibrates while it is being moved.
- triangulation station — a point used in triangulation as a basis for making maps. Triangulation stations are marked in a number of ways, such as by a tapering stone pillar on a hilltop
- voluntary association — a group of individuals joined together on the basis of mutual interest or common objectives, especially a business group that is not organized or constituted as a legal entity.
- voluntary liquidation — the process of voluntarily terminating the affairs of a business, firm, etc, by realizing its assets to discharge its liabilities or the state of a business firm, etc, having its affairs so terminated
- water of constitution — water present in a molecule that cannot be removed without disrupting the molecule.
- west lothian question — the apparent inconsistency that members of parliament who represent Scottish constituencies are eligible to vote at Westminster on matters that relate only to England, whereas members of parliament from English constituencies are not eligible to vote on Scottish matters
- without qualification — If something is stated or accepted without qualification, it is stated or accepted as it is, without the need for any changes.
- workers' compensation — a government-sponsored insurance system, funded by contributions from employers, for compensating employees for injury or occupational disease suffered in connection with their employment