UrochordWordNet Explorer

a flexible rodlike structure that forms the supporting axis of the body in the lowest chordates and lowest vertebrates and in embryos of higher vertebrates

primitive marine animal having a saclike unsegmented body and a urochord that is conspicuous in the larva

any animal of the phylum Chordata having a notochord or spinal column

tunicates

minute sedentary marine invertebrate having a saclike body with siphons through which water enters and leaves

minute floating marine tunicate having a transparent body with an opening at each end

free-swimming oceanic tunicate with a barrel-shaped transparent body

any member of the class Larvacea