heptameride
noun/hɛpˈtæməɹaɪd/
Etymology From French heptaméride, from Ancient Greek ἑπτά (heptá, “seven”) + French méride (compare meridian).
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, The Saturday Evening Post, volume 186, number 4, page 45:
- 1930, British Chemical Abstracts: Part A, Pure Chemistry, page 317, ISSN 0365-9259. The residue remaining after the separation of the heptameride is colourless and very viscous; there appears little prospect of isolating higher polymerides …
- 1938, Albert Ernest Dunstan, Benjamin Talbott Brooks (eds), The Science of Petroleum, vol. 4, page 2830, OCLC 313182716. Fractionation of the liquid polymers gave compounds up to the heptameride.
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- 1939, British Chemical Abstracts: Part A, Pure Chemistry, page 602, ISSN 0365-9259. From available v.d. data the existence of polymerides is shown and the relative amounts of various associated forms up to the heptameride have been calc.
3
Entertainment, Lifestyle, Music Obsolete An interval of pitch equal to 1/7 of a meride, or 1/301 of an octave.
- Sauveur divided the heptameride into two demi-heptamerides. One demi-heptameride is 1/602 of an octave, with frequency ratio 1:2^(1/602) = 1.001 154 or 1.993 cents, very nearly 1/12 of a ditonic comma.1984, Joseph Sauveur (trans. Rudolf Rasch), Collected Writings on Musical Acoustics: (Paris 1700-1713), →ISBN, page 28:
- As 301 = 7 × 43, he called each degree a heptameride, which he made = .03987 of an (equal) Semitone.2007, Translator's notes in: Hermann von Helmholtz, On the Sensations of Tone, →ISBN, page 437:
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- Sauveur stresses that the difference between the pure 5th (176 heptamerides) and the tempered 5th (175) is equal to 1: so the temperaments of all the other intervals will also be multiples of 1:2008, Patrizio Barbieri, Enharmonic: Instruments and Music 1470-1900, →ISBN, page 378:
- Related terms
- meride, decameride