18-letter words containing o, h, m, g, e, r
- photomorphogenesis — plant development that is controlled by light.
- programmer's cheer — (humour) "Shift to the left! Shift to the right! Pop up, push down! Byte! Byte! Byte!" [Origin?]
- propaganda machine — the group of people, publications, etc, such as of a government, country etc, responsible for the organized dissemination of information, allegations, etc, to assist or damage the cause of a government, movement, etc
- psychogalvanometer — a type of galvanometer for detecting and measuring psychogalvanic currents.
- runge-kutta method — a numerical method, involving successive approximations, used to solve differential equations.
- self-comprehending — to understand the nature or meaning of; grasp with the mind; perceive: He did not comprehend the significance of the ambassador's remark.
- shotgun microphone — a directional microphone with a narrow-angle range of sensitivity.
- 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
- spherical geometry — the branch of geometry that deals with figures on spherical surfaces.
- synthetic geometry — elementary geometry, as distinct from analytic geometry.
- 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
- thermogalvanometer — a thermoammeter for measuring small currents, consisting of a thermocouple connected to a direct-current galvanometer.
- 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.
- urban homesteading — homesteading (def 2).