coralline

[kawr-uh-lin, -lahyn, kor-]
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adjective

composed of coral or having the structure of coral: coralline limestone.
coral-colored; reddish-yellow; light yellowish-red; pinkish-yellow.

noun

any red algae impregnated with lime.
any of various corallike animals or calcareous algae.

Origin of coralline

First recorded in 1535–45, coralline is from the Late Latin word corallīnus coral red. See coral, -ine1
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British Dictionary definitions for coralline

coralline

adjective

Also: coralloid of, relating to, or resembling coral
of the colour of coral

noun

any of various red algae impregnated with calcium carbonate, esp any of the genus Corallina
any of various animals that resemble coral, such as certain sponges

Word Origin for coralline

C16: from Late Latin corallīnus coral red, from Latin corāllium coral
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