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pteroylglutamic acid
pterygium
pterygoid process
pteryla
PTFE
ptg.
PTH
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pteranodon
pter·an·o·don [ tə ránnə dòn ] (plural pter·a·no·dons)


noun 
Definition:
 
toothless pterosaur: an extinct toothless flying reptile with a bony crest. Genus Pteranodon.
[Late 19th century. < modern Latin< Greek pteron "wing"]
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