sorus Hear it!

sorus definition

so·rus (sō′rəs, sôr′əs)

noun pl. sori -·ri (-ī)

a cluster of spore cases, esp. the ones on the undersurface of a fern frond

Etymology: ModL < Gr sōros, a heap: see soma

Webster's New World College Dictionary Copyright © 2009 by Wiley Publishing, Inc., Cleveland, Ohio.
Used by arrangement with John Wiley & Sons, Inc.

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