hendecad

== English == === Etymology === From hendec- +‎ -ad. === Pronunciation === (Received Pronunciation, General American) IPA(key): /ˌhɛnˈdɛkad/ Hyphenation: hen‧dec‧ad === Noun === hendecad (plural hendecads) A set of eleven things. ==== Coordinate terms ==== (group) monad, duad/dyad, triad, tetrad, pentad, hexad, hebdomad/heptad, ogdoad/octad, ennead/nonad, decad/decade, hendecad, dodecad/duodecade, chiliad