urochord
uroc·hord
noun
1.
primitive marine animal having a saclike unsegmented body and a urochord (a notochord) conspicuous in the larva
Origin
From uro- + chord.
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WordNet 2.1 (Princeton University). Wiktionary (CC BY-SA). WordNet 2.1 Copyright Princeton University. All rights reserved. Wiktionary content is available under the Creative Commons Attribution-ShareAlike Licence.