† platysternaladj. [ < platy-comb. form + sternaladj.; compare scientific Latin Platysternae, Nitzsch's name (1840) for an order of birds comprising the ratites, and Hellenistic Greek πλατύστερνος broad-breasted] OrnithologyObsoleterare (of a bird) having a flat sternum; ratite.
ΚΠ
1858 R. G. MayneExpos. Lexicon Med. Sci. (1860) 976/2Platysternus,..platysternal.