• (n.pl.) A Linnaean class of plants, in which the flowers have eight stamens not united to one another or to the pistil.
Oc·tan'dri·a noun plural [ New Latin , from Greek ... (for ... eight) + ..., ..., male, man.] (Botany) A Linnæan class of plants, in which the flowers have eight stamens not united to one another or to the pistil.