a. [ L. excurrens, p. p. of excurrere, excursum, to run out; ex out + currere to run. See Current. ] 1. Running or flowing out; as: (Bot.) Running or extending out; as, an excurrent midrib, one which projects beyond the apex of a leaf; an excurrent steam or trunk, one which continues to the top. [ 1913 Webster ]

2. (Zoöl.) Characterized by a current which flows outward; as, an excurrent orifice or tube. [ 1913 Webster ]