Amphioxidae n 1: lancelets [syn: {Amphioxidae}, {family Amphioxidae}, {Branchiostomidae}, {family Branchiostomidae}]
Amphioxidae \Amphioxidae\ n. 1. 1 a family comprising the lancelets. Syn: family {Amphioxidae}, Branchiostomidae, family {Branchiostomidae}. [WordNet 1.5]