[f. L. furca fork; see -ATION.] A forking or branching; hence, a forklike division or branch.
1646. Sir T. Browne, Pseud. Ep., III. ix. 124. When they [deer] grow old, they first doe lose their brow Antlers or, lowest furcations next the head.
1846. Dana, Zooph. (1848), 71. There are two modes of branching:1. By a simple furcation of the extremity of a branch. Ibid. (1862), Man. Geol., 36. Another furcation of it passes by Eastern Borneo.
1874. M. Cooke, Fungi (1875), ii. 52. The furcations being made in such a manner that the ends of the branch at last so stand together that their surface forms a ball.