noun lith·o·tham·ni·on

Definition of lithothamnion

  1. 1 capitalized :  a genus of crustose reef-forming red algae (family Corallinaceae) that are abundant in post-Jurassic geologic strata and are represented by numerous recent forms growing chiefly on rocks and other algae

  2. 2 plural -s :  any plant of the genus Lithothamnion

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Origin and Etymology of lithothamnion

New Latin, from lith- + Greek thamnos bush + -ion (diminutive suffix)

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a rounded knoll or a ridge of ice

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