Definition of platelet noun from the Oxford Advanced Learner's Dictionary

 

platelet

 noun
noun
BrE BrE//ˈpleɪtlət//
 
; NAmE NAmE//ˈpleɪtlət//
 
 
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a very small part of a cell in the blood, shaped like a disc. Platelets help to clot the blood from a cut or wound.
See the Oxford Advanced American Dictionary entry: platelet