Relating to or characteristic of the apteryges; describing features of wingless or flipper-like appendages found in flightless birds.
From apterygia (wingless appendages) + -al (adjective-forming suffix). This ornithological term describes characteristics related to the modified wing structures of flightless birds.
When scientists describe a penguin's apterygial structure, they're marveling at how evolution completely redesigned wings for underwater ballet!
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