Definition of octad in English:


Syllabification: oc·tad
Pronunciation: /ˈäktad


  • A group or set of eight.
    More example sentences
    • After meiosis, the four meiotic products undergo an additional mitotic division to yield eight haploid nuclei, which differentiate into an octad of eight ascospores.
    • In this case, the first postmeiotic cells deriving from the spores have been separated to yield octads composed of four pairs of colonies deriving from a single meiosis.
    • In these cases, molecular analysis was performed on only four members of the octad.


mid 19th century: via late Latin from Greek oktas, oktad-, from oktō 'eight'.

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