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
monocotyledonousplay \-dən-əs\ adjective
Origin and Etymology of monocotyledon
ultimately from New Latin mon- + cotyledon cotyledon
First Known Use: circa 1727
Seen and Heard
What made you want to look up monocotyledon? Please tell us where you read or heard it (including the quote, if possible).