AMPHINEURA
Am`phi*neu"ra, n. pl. Etym: [NL., fr. (Zoöl.)
Defn: A division of Mollusca remarkable for the bilateral symmetry of the organs and the arrangement of the nerves.
AMPHIOXUS
Am`phi*ox"us, n. Etym: [NL., fr. Gr. (Zoöl.)
Defn: 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, vertebræ, nor red blood. It forms the type of the group Acrania, Leptocardia, etc.
AMPHIPNEUST
Am*phip"neust, n. Etym: [Gr. (Zoöl.)
Defn: One of a tribe of Amphibia, which have both lungs and gills at the same time, as the proteus and siren.
AMPHIPOD
Am"phi*pod, n. (Zoöl.)
Defn: One of the Amphipoda.
AMPHIPOD; AMPHIPODAN
Am"phi*pod, Am*phip"o*dan, a. (Zoöl.)
Defn: Of or pertaining to the Amphipoda.