The {anharmonic function} or {anharmonic ratio} of four points abcd on a straight line is the quantity (ac/ad):(bc/bd), where the segments are to be regarded as plus or minus, according to the order of the letters. [1913 Webster]
The Collaborative International Dictionary of English. 2000.
Anharmonic — An har*mon ic, a. [F. anharmonique, fr. Gr. an priv. + ? harmonic.] (Math.) Not harmonic. [1913 Webster] The {anharmonic function} or {anharmonic ratio} of four points abcd on a straight line is the quantity (ac/ad):(bc/bd), where the segments… … The Collaborative International Dictionary of English
anharmonic ratio — Anharmonic An har*mon ic, a. [F. anharmonique, fr. Gr. an priv. + ? harmonic.] (Math.) Not harmonic. [1913 Webster] The {anharmonic function} or {anharmonic ratio} of four points abcd on a straight line is the quantity (ac/ad):(bc/bd), where the… … The Collaborative International Dictionary of English
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