| Pronunciation: | | 'heptad
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| Matching Terms: | | hepta, heptachlor, heptachord, heptad repeat, heptade, heptadecanoic acid, heptaglot, heptagon, heptagonal, heptagynia, heptagynian, heptahedron, heptamerous, heptandria, heptandrian, heptane, heptangular, heptaphyllous, heptarch, heptarchic, heptarchist, heptarchy, heptaspermous, heptastich, heptateuch, heptavalent
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 WordNet Dictionary |
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| | Definition: | | [n] the cardinal number that is the sum of six and one |
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| | Synonyms: | | 7, septet, seven, sevener, VII |
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| | See Also: | | digit, figure |
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| Webster's 1913 Dictionary |
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| | Definition: | | \Hep"tad\, n. [L. heptas the number seven. Gr. ?, ?, fr.
"epta` seven.] (Chem.)
An atom which has a valence of seven, and which can be
theoretically combined with, substituted for, or replaced by,
seven monad atoms or radicals; as, iodine is a heptad in
iodic acid. Also used as an adjective.
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