obelia

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o·be·lia

O0006300 (ō-bēl′yə)n. Any of various marine hydroids of the genus Obelia that exist chiefly as colonies of polyps growing in a branchlike form on surfaces such as piers or rocks.
[New Latin Obelia, genus name, probably from Greek obeliās, a loaf baked on a spit, from obelos, a spit.]

obelia

(əʊˈbiːlɪə) n (Animals) a type of coelenterate of the genus Obelia that is found as a woolly mass growing on pieces of wood, etc in the sea

o•be•lia

(oʊˈbil yə, oʊˈbi li ə)

n., pl. -lias. any colonial marine hydrozoan of the genus Laomedea (Obelia), appearing as a delicate, mosslike growth on rocks, pilings, etc. [1865–70; < New Latin < Greek obelías a loaf toasted on a spit =obel(ós) a spit (see obelisk) + -ias n. suffix]