Found 2 items, similar to ogdoad.
English → English (WordNet) Definition: ogdoad ogdoad n : the cardinal number that is the sum of seven and one [syn: eight, 8, VIII, eighter, eighter from Decatur, octad, octonary, octet]
English → English (gcide) Definition: ogdoad ogdoad \og"do*ad\ ([o^]g"d[-o]*[a^]d), n. [Gr. 'ogdoa`s, 'ogdoa`dos, from 'oktw` eight.] A thing made up of eight parts. --Milman. [1913 Webster]