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ons |
1 definition found From Webster's Revised Unabridged Dictionary (1913) [web1913]: Pleurosteon \Pleu*ros"te*on\, n.; pl L. {Pleurostea}, E. {-ons}. [NL., fr Gr ? a rib + ? a bone.] (Anat.) The antero-lateral piece which articulates the sternum of birds.
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