Found 2 items, similar to amphioxus.
English → English (WordNet) Definition: amphioxus amphioxus n : small translucent lancet-shaped burrowing marine animal; primitive forerunner of the vertebrates [syn: lancelet] [also: amphioxi (pl)]
English → English (gcide) Definition: Amphioxus Amphioxus \Am`phi*ox"us\, n. [NL., fr. Gr. ? + ? sharp.] (Zo["o]l.) A fishlike creature (Amphioxus lanceolatus), two or three inches long, found in temperature seas; -- also called the lancelet. Its body is pointed at both ends. It is the lowest and most generalized of the vertebrates, having neither brain, skull, vertebr[ae], nor red blood. It forms the type of the group Acrania, Leptocardia, etc. [1913 Webster]