- Acanthopterygii by Webster's
... n.pl.) An order of fishes having some of the rays of the dorsal, ventral, and anal fins unarticulated and spinelike, as the perch.
- Spinous by Webster's
... a.) Spinose; thorny.(a.) Having the form of a spine or thorn; spinelike.
- Polypteriformes by Carlos Holt
... fishes distinguished by thick, rhombic, ganoid scales with an enamellike covering, a slitlike spiracle behind the eye, a symmetrical caudal fin, and a dorsal series of free, spinelike finlets.
- Vibraculum by Webster's
... n.) One of the movable, slender, spinelike organs or parts with which certain bryozoans are furnished. They are regarded as specially modified zooids, of nearly the same nature as Avicularia.
- fulcrum by Sierra Lyons
... the pivot about which a lever turns a spinelike scale occurring in rows along the anterior edge of the fins in primitive bony fishes such as the sturgeon