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archipterygium |
1 definition found From Webster's Revised Unabridged Dictionary (1913) [web1913]: Archipterygium \Ar*chip`te*ryg"i*um\ ([aum]r*k[i^]p`t[-e]*r[i^]j"[i^]*[u^]m), n. [NL., fr Gr pref. 'archi- (E. arch-) + ptery`gion wing, fin.] (Anat.) The primitive form of fin, like that of Ceratodus.