of, relating to, or belonging to the Acanthopterygii,
a large group of teleost
fishes having spiny fin
rays. The group includes most saltwater bony
noun Compare malacopterygian 2.
any fish belonging to the Acanthopterygii
Collins English Dictionary. Copyright © HarperCollins Publishers
Word origin of 'acanthopterygian'C19: from New Latin Acanthopterygii, from acantho- + Greek pterúgion fin