Trī'jū-goŭs or Trī-jū'goŭs, a.

(Synop., § 130), a. [Fr. trijugué, from Lat. trijugus, triple-yoked, threefold, from Lat. tri, q. v., and jugum, a yoke.] (Bot.) In three pairs.

Trijugous leaf (Bot.), a pinnate leaf with three pairs of leaflets.