| Word | Definitions | Synonyms |
|---|---|---|
| amphioxus | (noun) small translucent lancet-shaped burrowing marine animal; primitive forerunner of the vertebrates | Synonyms: lancelet |
| nexus | (noun) a connected series or group | - |
| (noun) the means of connection between things linked in series | Synonyms: link | |
| plexus | (noun) a network of intersecting blood vessels or intersecting nerves or intersecting lymph vessels | Synonyms: rete |