Defn: The larva of certain starfishes as developed in the free- swimming stage.
BIPINNATE; BIPINNATED Bi*pin"nate, Bi*pin"na*ted, a. Etym: [Pref. bi- + pinnate; cf. F. bipinné. Cf. Bipennate.]
Defn: Twice pinnate.
BIPINNATIFID
Bi`pin*nat"i*fid, a. Etym: [Pref. bi- + pinnatifid.] (Bot.)
Defn: Doubly pinnatifid.
Note: A bipinnatifid leaf is a pinnatifid leaf having its segments or divisions also pinnatifid. The primary divisions are pinnæ and the secondary pinnules.
BIPLANE
Bi"plane, n. [Pref. bi- + plane.] (Aëronautics)
Defn: An aëroplane with two main supporting surfaces one above the other.
BIPLANE
Bi"plane, a. (Aëronautics)
Defn: Having, or consisting of, two superposed planes, aërocurves, or the like; of or pertaining to a biplane; as, a biplane rudder.