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| ac·ti·no·pte·ryg·i·an [ àktinō tə ríjjee ən ] (plural ac·ti·no·pte·ryg·i·ans) |
noun |
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| Definition: |
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fish with fan-shaped fins: a fish that has fan-shaped fins supported by radiating spines or rays. Nearly all living bony fishes are actinopterygians. Subclass Actinopterygii.
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| [Late 19th century. < modern Latin Actinopterygii (plural) <actino- + Greek pterugion "fin"] |
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