Definition of "excurrent" []

• Running or flowing in an outward direction. (adjective)
• Marked by an outward flow of current. (adjective)
• Botany Having a single, undivided trunk with lateral branches, as in spruce trees. (adjective)
• Botany Extending beyond the apex of a leaf, as a midrib or vein. (adjective)

American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

• "Where they are of considerable extent, or where even small they are very numerous, they serve to retain the flood waters, delivering them slowly to the excurrent streams."
• "Mussels are natural water clarifiers; the water that exits through the "excurrent aperture" -- the second siphon -- is cleaner than what came in."
• "It has two openings, an intake siphon and an excurrent siphon, both of which travel through the neck."