(Zoology)a marine invertebrate of a group which includes the sea squirts and salps. They have a rubbery or hard outer coat and two siphons to draw water into and out of the body (动)被囊动物,尾索动物
Subphylum Urochordata: three classes 尾索动物亚门:3纲
adjective
(一般作 tunicated)(Botany)(of a plant bulb, e.g. an onion) having concentric layers (植)(植物鳞茎,如洋葱)具膜被的,具皮鳞的
语源
mid 18th cent.: from Latin tunicatus, past participle of tunicare 'clothe with a tunic', from tunica (see tunica)