/ · 1894 Brewer’s · A · Algebra
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is the Arabic al gebr (the equalisation), “the supplementing and equalising (process);” so called because the problems are solved by equations, and the equations are made by supplementary terms. Fancifully identified with the Arabian chemist Gebir.
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Entry taken from Dictionary of Phrase and Fable, edited by the Rev. E. Cobham Brewer, LL.D. and revised in 1895.
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