23-letter words containing a, g, r, i, c, h
- magnetomechanical ratio — the ratio of the angular momentum of a rotating charged particle to its magnetic moment; the reciprocal of the gyromagnetic ratio.
- martha washington chair — a chair of the 18th century having a high upholstered back, a low upholstered seat, and short arms resting on incurvate supports.
- nigger of the narcissus — a novel (1897) by Joseph Conrad.
- orthographic projection — a two-dimensional graphic representation of an object in which the projecting lines are at right angles to the plane of the projection. Also called orthogonal projection. Compare isometric (def 5).
- overnight accommodation — accommodation provided by an establishment (such as a hotel) where guests can sleep or spend the night
- photoelectric magnitude — the magnitude of a star determined using a photometer plus a filter to select light or other radiation of the desired wavelength
- precipitation hardening — a process in which alloys are strengthened by the formation, in their lattice, of a fine dispersion of one component when the metal is quenched from a high temperature and aged at an intermediate temperature
- private branch exchange — (communications) (PBX) A telephone exchange local to a particular organisation who use, rather than provide, telephone services. The earliest PBXs were manual (Private Manual Branch EXchange, PMBX) but are now more likely to be automatic (Private Automatic Branch eXchange).
- public-key cryptography — public-key encryption
- put the record straight — to correct an error or misunderstanding
- radial drilling machine — a machine in which the drilling head is mounted to slide along a radial arm which can be rotated, raised, or lowered on a vertical mast to adjust the position of the drill above the workpiece
- right circular cylinder — a cylinder generated by the revolution of a rectangle about one of its sides.
- right, left, and centre — on all sides; from every direction
- school (crossing) guard — a person, either an adult or an older student, whose duty it is to help children cross streets near schools safely
- securities exchange act — a law passed in 1934 establishing the SEC.
- self extracting archive — (file format) (SEA) An archive format used on the Apple Macintosh. Double-clicking a file of this type should extract its contents.
- staggered directorships — a defence against unwelcome takeover bids in which a company resolves that its directors should serve staggered terms of office and that no director can be removed from office without just cause, thus preventing a bidder from controlling the board for some years
- the library of congress — the official library of the United States in Washington, DC. It houses extensive collections in all subject areas and formats, important historical documents, and is also a depository for copyrighted materials.
- the teaching profession — the profession of a teacher
- the yachting fraternity — the social circle of well-off people who sail yachts
- to keep a straight face — If you manage to keep a straight face, you manage to look serious, although you want to laugh.
- traffic-light labelling — a system of food labelling in which red, amber, and green symbols are used to indicate whether the food contains high, medium, or low amounts of sugar, fat, salt, etc
- trigonal trisoctahedron — a trisoctahedron whose faces are triangles.
- unconditional discharge — the release of a defendant without having to spend time on parole or probation