Meaning of PROTHROMBIN

Pronunciation:			prow'thrâmbin
WordNet Dictionary
	Definition:		[n]  a protein in blood plasma that is the inactive precursor of thrombin
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	Synonyms:		factor II
	See Also:		clotting factor, coagulation factor
Medical Dictionary
	Definition:		A substance found in circulating blood that interacts with calcium salts to form thrombin, necessary for blood clotting.