In biology, a tunica is a layer, coat, sheath, or similar covering. The word came to English from the Neo-Latin of science and medicine. Its literal sense is about the same as that of the word tunic, with which it is cognate. In biology, one of its senses used to be the taxonomic name of a genus of plants, but the nomenclature has been revised and those plants are now included in the genus Petrorhagia.

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Not who you're looking for? Others named tunica: unincorporated community in West Feliciana Parish, Louisiana · town in Tunica County, Mississippi, United States of America · language

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