Source : Webster's Revised Unabridged Dictionary (1913)

Octandria \Oc*tan"dri*a\, n.pl. [NL., fr. Gr. ? (for ? eight) +
   ?, ?, male, man.] (Bot.)
   A Linn[ae]an class of plants, in which the flowers have eight
   stamens not united to one another or to the pistil.