adjective
- Bot. of or covered with concentric layers or tunics, as an onion
- Zool. having a tunic or mantle
Origin:
L tunicatus, pp. of tunicare, to put on a tunic < tunica, tunic
noun
any of a subphylum (Tunicata) of solitary or colonial sea chordates, having a saclike body enclosed by a thick tunic, including the salps and ascidians