Tunica tunic • Tunican · · · Info · Definitions · Synonyms · Characters · · Tunica · · Text Latin · · Script 6 · · Length Definitions · · · (noun) an enveloping or covering membrane or layer of body tissue. Synonyms: tunic, tunica, adventitia. · · Noun Definition 1 Synonyms · · · tunic · · Synonym 1 adventitia · · Synonym 2 Characters · · T latin capital letter t U+0054 a latin small letter a U+0061 c latin small letter c U+0063 i latin small letter i U+0069 n latin small letter n U+006E u latin small letter u U+0075