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amphioxus

Amphioxus is a 9 letter word which starts with the letter A and ends with the letter S for which we found 1 definitions.

Definition
(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.

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