lam·​i·​nar·​ia ˌla-mə-ˈner-ē-ə How to pronounce laminaria (audio)
plural laminarias
: any of a genus (Laminaria) or order (Laminariales) of large annual or perennial kelps that typically have an unbranched cylindrical or flattened stipe and a smooth or convoluted leathery blade (see blade entry 1 sense 2e)
laminarian adjective
laminarian algae
laminarian noun
plural laminarians
… many laminarians cannot reproduce at temperatures above 18-25 degrees C. J. A. Raven

Word History


New Latin, from Latin lamina

First Known Use

1830, in the meaning defined above

Time Traveler
The first known use of laminaria was in 1830

Dictionary Entries Near laminaria

Cite this Entry

“Laminaria.” Dictionary, Merriam-Webster, Accessed 19 Jul. 2024.

Kids Definition


lam·​i·​nar·​ia ˌlam-ə-ˈner-ē-ə How to pronounce laminaria (audio)
: any of various large kelps with an unbranched cylinder-shaped or flattened stalk and a smooth or wavy blade

Medical Definition


lam·​i·​nar·​ia ˌlam-ə-ˈner-ē-ə, -ˈnar- How to pronounce laminaria (audio)
: any of a genus (Laminaria) or order (Laminariales) of large annual or perennial kelps that includes some (such as Laminaria digitata) that have been used to dilate the cervix
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