heptameride

noun3

1. •
   A thing having seven parts or divisions.

   • The Greeks had Seven Wise Men and Seven Sleepers, and the Pythagoreans saw magic in all the heptamerides. — 1914
2. •
   (old-fashioned) A seven-unit oligomer.

   • The residue remaining after the separation of the heptameride is colourless and very viscous; there appears little prospect of isolating higher polymerides … — 1930
3. •
   (no longer used) An interval of pitch equal to 1/7 of a meride, or 1/301 of an octave.

   • As 301 = 7 × 43, he called each degree a heptameride, which he made = .03987 of an (equal) Semitone. — 2007