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Definitions of bi
Twice; doubly; two; as, biannual, biweekly. bin; bis. The Concise Standard Dictionary of the English Language. By James Champlin Fernald. Published 1919.
In the composition of chemical names bi- denotes two atoms, parts, or equivalents of that constituent to the name of which it is prefixed, to one of the other component, or that such constituent is present in double the ordinary proportion; as, bichromate, bisulphide. Be- and di- are often used interchangeably. Webster Dictionary DB
An old form of the Anglo-Saxon prefix now usually written be; as, bifore, bi forn=before; bigan=began; biheste=behest; biside, bisyde=beside; bitweene=between; etc. Chaucer. The american dictionary of the english language. By Daniel Lyons. Published 1899.
A Latin prefix signifying two, twice, or twofold. Nuttall's Standard dictionary of the English language. By Nuttall, P.Austin. Published 1914.
A common prefix, meaning two, twice, double, in two. Note.-When compounds beginning with bi are not found, mark the meaning of bi, and turn to the principal word. Etymological and pronouncing dictionary of the English language. By Stormonth, James, Phelp, P. H. Published 1874.
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