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sea lettuce

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noun
any seaweed of the genus Ulva, having large leaflike blades.
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Origin of sea lettuce

First recorded in 1660–70
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2021

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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
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