/tooh"ni kit, -kayt', tyooh"-/ , n.
1. Zool. any sessile marine chordate of the subphylum Tunicata (Urochordata), having a saclike body enclosed in a thick membrane or tunic and two openings or siphons for the ingress and egress of water.
adj. Also, tunicated .
2. (esp. of the Tunicata) having a tunic or covering.
3. of or pertaining to the tunicates.
4. Bot. having or consisting of a series of concentric layers, as a bulb.
[ 1615-25; tunicatus wearing a tunic. See TUNIC, -ATE 1 ]