Agarum

noun

Ag·​a·​rum

ˈa-gə-rəm

: a genus of kelps (family Laminariaceae) inhabiting the colder oceans and having a branched holdfast, a brief stipe, and a lamina with smooth perforated margins

Word History

Etymology

New Latin, from English agar

First Known Use

1853, in the meaning defined above

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