octad

== English == === Etymology === From oct- +‎ -ad. === Pronunciation === (Received Pronunciation) IPA(key): /ˈɒktæd/ (General American) IPA(key): /ˈɑkˌtæd/ Hyphenation: oc‧tad === Noun === octad (plural octads) A group of eight things. Synonym: octonary (historical) hundred million = myriad myriad; 100,000,000 = 108 [from 16th c.] ==== Coordinate terms ==== (group) monad, duad/dyad, triad, tetrad, pentad, hexad, hebdomad/heptad, ogdoad/octad, ennead/nonad, decad/decade, hendecad, dodecad/duodecade, chiliad ==== Derived terms ==== octadic octad of octads ==== Related terms ==== octaeteris octennium