tunicate
Concise Oxford English Dictionary © 2008 Oxford University Press:
tunicate /ˈtjuːnɪkət, -keɪt/
▶noun Zoology a marine invertebrate of a group which includes the sea squirts and salps, with a rubbery or hard outer coat. [Subphylum Urochordata.] ▶adjective (also tunicated) Botany (of a plant bulb) having concentric layers.
'tunicate' also found in these Oxford entries:

