(n.) 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, vertebrae, nor red blood. It forms the type of the group Acrania, Leptocardia, etc.
Webster's Revised Unabridged Dictionary
| APA | Webster's. (2011). amphioxus. Retrieved September 20, 2026, from http://smartdefine.org/amphioxus/definitions/1973298 |
| Chicago | Webster's. 2011. "amphioxus" http://smartdefine.org/amphioxus/definitions/1973298 (accessed September 20, 2026). |
| Harvard | Webster's 2011, amphioxus, Smart Define, viewed 20 September, 2026, <http://smartdefine.org/amphioxus/definitions/1973298>. |
| MLA | Webster's. "amphioxus" 27 May 2011. Web. 20 September 2026. <http://smartdefine.org/amphioxus/definitions/1973298> |