Synonyms/Hypernyms (Ordered by Estimated Frequency) of noun heptad

1 sense of heptad

Sense 1
seven, 7, VII, sevener, heptad, septet, septenary -- (the cardinal number that is the sum of six and one)
       => digit, figure -- (one of the elements that collectively form a system of numeration; "0 and 1 are digits")