[ak-uh n-thoh-dee-uh n]
any small, spiny-finned, sharklike fish of the extinct order Acanthodii, from the Paleozoic Era.
Origin of acanthodian
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019
Examples from the Web for acanthodian
Historical Examples of acanthodian
There is no evidence that the lateral row of spines in the acanthodian Climatius has any other than a defensive significance.