raninian,a.andn.|rəˈnɪnɪən| [f. as prec. + -ian.] a.adj. Pertaining to the Raninidæ, an order of frog-crabs. b.n. One of the Raninidæ. 1841Penny Cycl. XIX. 298/1 Raninians, the name by which M. Milne Edwards designates the fourth tribe of the family Apterura.