† metagnathismn.
Origin: Formed within English, by derivation. Etymons: meta- prefix, -gnathism comb. form.
Etymology: < meta- prefix + -gnathism comb. form, after metagnathous adj.
Ornithology.
Obsolete.
rare.
1890 E. Coues ii. 150 Each mandible may be oppositely falcate, as in the crossbill, constituting metagnathism.
This entry has been updated (OED Third Edition, December 2001; most recently modified version published online June 2018).