† pterygospermousadj. [after scientific Latin pterygospermus (1791 or earlier as a specific epithet)] BotanyObsoleterare having winged seeds.Apparently only attested in dictionaries or glossaries.
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1858 R. G. MayneExpos. Lexicon Med. Sci. (1860) 1039/2Pterygospermus, having winged fruits or seeds, as the Molinga pterygosperma: pterygospermous.