Main Entry: tu·ni·ca Pronunciation: 't(y)ü-ni-k& Function: noun Inflected Form: pluraltu·ni·cae/-n&-"kE, -"kI, -"sE/ : an enveloping membrane or layer of body tissue
tunica tu·ni·ca (t&oomacr;'nĭ-kə, ty&oomacr;'-) n.pl.tu·ni·cae (-kē', -sē') An enclosing or enveloping membrane or layer of tissues, as of a blood vessel or other tubular structure.