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HYPHEN
WORDNET DICTIONARY
CIDE DICTIONARY
OXFORD DICTIONARY
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WORDNET DICTIONARY
Noun hexad has 1 sense
- hexad(n = noun.quantity) 6, captain hicks, half a dozen, sestet, sextet, sextuplet, sise, six, sixer, vi - the cardinal number that is the sum of five and one; is a kind of digit, figure
CIDE DICTIONARY
hexad, n. [L. hexas, hexadis, the number six, Gr. , , fr. "e`x six.].
An atom whose valence is six, and which can be theoretically combined with, substituted for, or replaced by, six monad atoms or radicals; as, sulphur is a hexad in sulphuric acid. Also used as an adjective. [1913 Webster]