hexad

2 definitions found

hexad - Collaborative International Dictionary of English v.0.48 :

  Hexad \Hex"ad\, n. [L. hexas, hexadis, the number six, Gr. ?, ?,
     fr. "e`x six.] (chem.)
     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]

hexad - WordNet (r) 2.1 (2005) :

  hexad
      n 1: the cardinal number that is the sum of five and one [syn:
           six, 6, VI, sixer, sise, Captain Hicks, half a dozen
           , sextet, sestet, sextuplet, hexad]