sea lettuce

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noun

any seaweed of the genus Ulva, having large leaflike blades.

Origin of sea lettuce

First recorded in 1660–70
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

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Historical Examples of sea lettuce


British Dictionary definitions for sea lettuce

sea lettuce

noun

any of various green seaweeds of the genus Ulva, which have edible wavy translucent fronds
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012