actinopterygian

actinopterygian

[ak-tuh-nop-tuh-rij-ee-uhn]
adjective
1.
belonging or pertaining to the Actinopterygii, a group of bony fishes.
noun
2.
an actinopterygian fish.

Origin:
< Neo-Latin Actinopterygi(i) (plural) (actino- actino- + Greek pterýgi(on) fin, equivalent to pteryg- (stem of ptéryx wing) + -ion diminutive suffix) + -an

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American Heritage
Science Dictionary
actinopterygian   (āk'tə-nŏp'tə-rĭj'ē-ən)  Pronunciation Key 
See ray-finned fish.
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