Definify.com

Webster 1913 Edition

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(ȧ-pŏt′ō̍-mē̍)

Noun.

[Gr.

ἀποτομή

a cutting off, fr.

ἀποτέμνειν

to cut off;

ἀπό

from +

τέμνειν

to cut.]

(Math.)

The difference between two quantities commensurable only in power, as between √2 and 1, or between the diagonal and side of a square.

(Mus)

The remaining part of a whole tone after a smaller semitone has been deducted from it; a major semitone.

[Obs.]

apotome ‎(plural apotomes)

(mathematics) The difference between two quantities commensurable only in power, as between 1 and the square root of 2, or between the diagonal and side of a square.
(music) The remaining part of a whole tone after a smaller semitone has been deducted from it; a major semitone.

the difference between two quantities commensurable only in power