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[2x]
: MÜ Mä Mæ Mé Mê Mö Mœ M- M. M1 M2 M3 M< Ma Mb Mc Md Me Mf Mg Mh Mi Mk Ml Mm Mn Mo Mp Mr Ms Mt Mu Mv Mw Mx My
mesopterygium
CIDE DICTIONARY
mesopterygium, n. [NL., fr. Gr. me`sos middle + a fin.].
The middle one of the three principal basal cartilages in the fins of fishes. [1913 Webster]
For further exploring for "mesopterygium" in Webster Dictionary Online