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Meaning of excurrent

ex•cur•rent

Pronunciation: (ik-skûr'unt, -skur'-), [key]
— adj.
  1. running out or forth.
  2. giving passage outward; affording exit: the excurrent canal of certain sponges.
    1. having the axis prolonged so as to form an undivided main stem or trunk, as the stem of the spruce.
    2. projecting beyond the apex, as the midrib in certain leaves.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.