octad

[ ok-tad ]
See synonyms for: octadoctadic on Thesaurus.com

noun
  1. a group or series of eight.

  2. Chemistry. an element, atom, or group having a valence of eight.

Origin of octad

1
1835–45; <Greek oktad- (stem of oktás) group of eight, equivalent to okt-oct- + -ad-ad1

Other words from octad

  • oc·tad·ic, adjective

Words Nearby octad

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British Dictionary definitions for octad

octad

/ (ˈɒktæd) /


noun
  1. a group or series of eight

  2. chem an element or group with a valency of eight

Origin of octad

1
C19: from Greek oktās, from oktō eight

Derived forms of octad

  • octadic, adjective

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