18-letter words containing g, h, i, o, r
- shunting operation — an operation in which rail coaches are manoeuvred
- sixth-form college — (in England and Wales) a college offering A-level and other courses to pupils over sixteen from local schools, esp from those that do not have sixth forms
- slim hole drilling — Slim hole drilling is drilling a well in which at least 90 percent of the hole has a diameter of seven inches or less.
- sling psychrometer — a psychrometer so designed that the wet-bulb thermometer can be ventilated, to expedite evaporation, by whirling in the air.
- something or other — sth not remembered precisely
- something to spare — a surplus of something
- song without words — a song which only consists of a tune or melody and does not have any lyrics
- spectroheliography — the process of obtaining an image of the sun in light of a particular wavelength, such as calcium or hydrogen, showing the distribution of the element over the surface and in the solar atmosphere, using a spectroheliograph
- speech recognition — Computers. the computerized analysis of spoken words in order to identify the speaker, as in security systems, or to respond to voiced commands: the analysis is performed by finding patterns in the spectrum of the incoming sound and comparing them with stored patterns of elements of sound, as phones, or of complete words.
- spherical geometry — the branch of geometry that deals with figures on spherical surfaces.
- strathclyde region — a former local government region in W Scotland: formed in 1975 from Glasgow, Renfrewshire, Lanarkshire, Buteshire, Dunbartonshire, and parts of Argyllshire, Ayrshire, and Stirlingshire; replaced in 1996 by the council areas of Glasgow, Renfrewshire, East Renfrewshire, Inverclyde, North Lanarkshire, South Lanarkshire, Argyll and Bute, East Dunbartonshire, West Dunbartonshire, North Ayrshire, South Ayrshire, and East Ayrshire
- superstring theory — any supersymmetric string theory in which each type of elementary particle is treated as a vibration of a single fundamental string (superstring) at a particular frequency.
- synthetic geometry — elementary geometry, as distinct from analytic geometry.
- the electronic age — the electronic age began when electronic equipment, including computers came into use
- the grand national — an annual steeplechase run at Aintree, Liverpool, since 1839
- the major rogation — April 25, observed by Christians as a day of solemn supplication for the harvest and marked by processions, special prayers, and blessing of the crops
- the nether regions — the genitals
- theodore gericault — (Jean Louis André) Théodore [zhahn lwee ahn-drey tey-aw-dawr] /ʒɑ̃ lwi ɑ̃ˈdreɪ teɪ ɔˈdɔr/ (Show IPA), 1791–1824, French painter.
- there you go again — Phrases such as there you go again are used to show annoyance at someone who is repeating something that has annoyed you in the past.
- there's no telling — You use there's no telling to introduce a statement when you want to say that it is impossible to know what will happen in a situation.
- thin on the ground — If people or things of a particular kind are thin on the ground, there are very few of them.
- thought experiment — Physics. a demonstration or calculation that is based on the postulates of a theory, as relativity, and that demonstrates or clarifies the consequences of the postulates.
- tip of the iceberg — a large floating mass of ice, detached from a glacier and carried out to sea.
- to a grinding halt — If you describe a bad situation as grinding, you mean it never gets better, changes, or ends.
- to grit your teeth — If you grit your teeth, you make up your mind to carry on even if the situation is very difficult.
- under the aegis of — guided or protected by
- urban homesteading — homesteading (def 2).
- vectorcardiography — a method of determining the direction and magnitude of the electrical forces of the heart.
- westinghouse brake — a railroad air brake operated by compressed air.
- wheelchair housing — housing designed or adapted for a chairbound person
- with flying colors — with flying colors, with an overwhelming victory, triumph, or success: He passed the test with flying colors.
- working hypothesis — See under hypothesis (def 1).