Source : Webster's Revised Unabridged Dictionary (1913)

Phalangious \Pha*lan"gi*ous\, a. [L. phalangium a kind of
   venomous spider, Gr. ?, fr. ? a spider. Cf. {Phalanx}.]
   (Zo["o]l.)
   Of or pertaining to Phalangoidea.