1. A very numerous division of fishes, distinguished by having the rays of their fins, especially the dorsal, hard, bony, and prickly at the extremities, as in the perch.

Nuttall's Standard dictionary of the English language By Nuttall, P.Austin

• zcanthopterygii,
• scanthopterygii,
• wcanthopterygii,
• qcanthopterygii,
• axanthopterygii,
• avanthopterygii,
• afanthopterygii,
• adanthopterygii,
• acznthopterygii,
• acsnthopterygii,
• acwnthopterygii,
• acqnthopterygii,
• acnthopterygii,
• acanthoptergyii,
• acanthopterigii,
• acanthopeterygii,
• acanthopteryggi,
• acanthropteregii,
• acanthroppterygii,
• acanthoperygyii

• acanthocytosis,
• acantholysis,
• acanthocereus,
• acanthopterygian,
• acanthocybium.

The adjective form of the word "acanthopterygii" is "acanthopterygian".

The plural form of the word "acanthopterygii" is also "acanthopterygii".

The singular form of the word "acanthopterygii" is "acanthopterygian"