First Known Use: circa 1866
Dictionary
coleoptile
noun co·le·op·tile \-ˈäp-təl\
Definition of COLEOPTILE
: the first leaf of a monocotyledon forming a protective sheath about the plumule
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Origin of COLEOPTILE
New Latin coleoptilum, from Greek koleon + ptilon down; akin to Greek pteron
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