noun horn·wort \-ˌwərt, -ˌwrt\

Definition of HORNWORT

:  any of a genus (Ceratophyllum of the family Ceratophyllaceae) of rootless thin-stemmed aquatic monoecious herbs with female flowers having a single carpel

First Known Use of HORNWORT

circa 1805


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March 31, 2015
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