Definition of monocotyledon
: any of a class or subclass (Liliopsida or Monocotyledoneae) of chiefly herbaceous angiospermous plants having an embryo with a single cotyledon, usually parallel-veined leaves, and floral organs arranged in cycles of three — compare dicotyledon
Origin of monocotyledon
ultimately from New Latin mon- + cotyledon cotyledon
First Known Use: circa 1727
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