Dictionary.com

actinopterygian

[ ak-tuh-nop-tuh-rij-ee-uhn ]
/ ˌæk təˌnɒp təˈrɪdʒ i ən /
Save This Word!

adjective

belonging or pertaining to the Actinopterygii, a group of bony fishes.

noun

an actinopterygian fish.

QUIZZES

QUIZ YOURSELF ON “ITS” VS. “IT’S”!

Apostrophes can be tricky; prove you know the difference between it’s and its in this crafty quiz!
Question 1 of 12
On the farm, the feed for chicks is significantly different from the roosters’; ______ not even comparable.

Origin of actinopterygian

<New Latin Actinopterygi(i) (plural) (actino-actino- + Greek pterýgi(on) fin, equivalent to pteryg- (stem of ptéryx wing) + -ion diminutive suffix) + -an
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2021

Scientific definitions for actinopterygian

actinopterygian
[ ăk′tə-nŏp′tə-rĭjē-ən ]

See ray-finned fish.
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
Learning At Home Just Got Easier!