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Definition of Factor IV
1. Noun. Ion of calcium; a factor in the clotting of blood.
Exact synonyms: Calcium Ion
Generic synonyms: Atomic Number 20, Ca, Calcium, Clotting Factor, Coagulation Factor
Generic synonyms: Atomic Number 20, Ca, Calcium, Clotting Factor, Coagulation Factor
Medical Definition of Factor IV
1. In the clotting of blood, calcium ions. (05 Mar 2000)