1. Having or covered with a tunic or tunica; having, arranged in, or made up of concentric layers
2. Of or relating to the tunicates
Covered with layers
One of a class of marine animals, including ascidians
Alternate name for sea squirt.
Primitive marine animal having a saclike unsegmented body and a urochord (a notochord) conspicuous in the larva; SYN. urochordate, urochord.