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Ancient Greek ἀποτομή (apotomḗ, cutting off).


apotome (plural apotomes)

  1. (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.
  2. (music) The remaining part of a whole tone after a smaller semitone has been deducted from it; a major semitone.


Part or all of this entry has been imported from the 1913 edition of Webster’s Dictionary, which is now free of copyright and hence in the public domain. The imported definitions may be significantly out of date, and any more recent senses may be completely missing.
(See the entry for apotome in
Webster’s Revised Unabridged Dictionary, G. & C. Merriam, 1913.)