amphioxus


am·phi·ox·us

noun \ˌam(p)-fē-ˈäk-səs\
plural -oxi \-ˌsī\ or am·phi·ox·us·es

Definition of AMPHIOXUS

:  any of a genus (Branchiostoma) of lancelets; broadly :  lancelet

Origin of AMPHIOXUS

New Latin, from amphi- + Greek oxys sharp
First Known Use: 1847

am·phi·ox·us

noun \ˌam(p)-fē-ˈäk-səs\   (Medical Dictionary)
plural -oxi \-ˌsī, -ˌsē\ or am·phi·ox·us·es

Medical Definition of AMPHIOXUS

: a lancelet of the genus Branchiostoma; broadly : lancelet

amphioxus

noun    (Concise Encyclopedia)

Any of certain small marine chordates (invertebrate subphylum Cephalochordata) found widely on tropical and subtropical coasts and less commonly in temperate waters. Seldom more than 3 in. (8 cm) long, they resemble small, slender fishes without eyes or a definite head. They are grouped in several species in two genera (Branchiostoma or Amphioxus, and Epigonichthyes or Asymmetron). They spend much of their time buried in gravel or mud on the ocean bottom, though they are able to swim, and feed by filtering food particles from water passing through their gill slits. They have no brain or distinct heart.

Variants of AMPHIOXUS

amphioxus or lancelet

Browse

Next Word in the Dictionary: amphipathic
Previous Word in the Dictionary: Amphioxididae
All Words Near: amphioxus

Seen & Heard

What made you want to look up amphioxus? Please tell us where you read or heard it (including the quote, if possible).

Get Our Free Apps
Voice Search, Favorites,
Word of the Day, and More
Join Us on FB & Twitter
Get the Word of the Day and More