1. A notochord of a larval tunicate typically confined to the caudal region
   "The urochord is a distinctive feature of tunicate larvae"
    
2. Primitive marine animal having a saclike unsegmented body and a urochord that is conspicuous in the larva
   "Researchers studied the development of the urochord in tunicate larvae";
   - tunicate, urochordate

Derived forms: urochords

Type of: chordate, notochord

Part of: subphylum Tunicata, subphylum Urochorda, subphylum Urochordata, Tunicata, Urochorda, Urochordata