Acanthopterygiin.
/ˌakənˌθɒptəˈrɪdʒɪʌɪ/, U.S. /ˌækənˌθɑptəˈrɪdʒiaɪ/ Zoology.
With plural agreement. A class (or subclass) of bony fishes comprising the ray-finned fishes, characterized by having hard and spiny rays in the dorsal fins.
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the world > animals > fish > superorder Acanthopterygii (spiny fins) > [noun]
Acanthopterygii1751
1751 J. Hill Adventures Mr. George Edwards iv. ii. 182 These I shall beg Leave to express, by Terms borrowed from the Greek, calling them Malocopterygii, Acanthopterygii, Branchiostegi, Chondropterygii, and Plagiuri, expressing the different Nature of their Fins, the Structure of the Parts about their Gills, and the horizontal or perpendicular Situation of their Tails.
1847 W. B. Carpenter Zool.: Systematic Acct. II. §551 The Acanthopterygii cannot be easily subdivided, except into families.
1902 Q. Jrnl. Microsc. Sci. 45 574 The palatine..has the large maxillary process so characteristic of the Acanthopterygii.
1997 G. S. Helfman et al. Diversity of Fishes xi. 170/2 In the more advanced groups (Paracanthopterygii and particularly Acanthopterygii) the premaxilla develops an ascending process.
This entry has been updated (OED Third Edition, December 2011; most recently modified version published online December 2021).
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n.1751- ground stroke
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