amphioxus
amp·hio·xus
noun
1.
small translucent lancet-shaped burrowing marine animal; primitive forerunner of the vertebrates
Origin
From Ancient Greek ἀμφί (amphí, “both”) + Ancient Greek ὀξύς (oxús, “sharp, keen”).
Related words
Broader terms
Parts
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.