factor IV

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Related to factor IV: factor V, factor IX, factor VI
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Noun1.factor IV - ion of calcium; a factor in the clotting of blood
atomic number 20, Ca, calcium - a white metallic element that burns with a brilliant light; the fifth most abundant element in the earth's crust; an important component of most plants and animals
clotting factor, coagulation factor - any of the factors in the blood whose actions are essential for blood coagulation
References in periodicals archive ?
In general the factor IV (Avoiding the status of non-work contractor) has the lowest significance value overall.
679 for every 10,000 people Reference: The author's studies Table 5: Indexes loaded in factor IV Index Row No.
The FSSC-SA has a five-factor solution: Factor I (fear of danger and death), Factor II (fear of the unknown), Factor III (worries), Factor IV (fear of animals), and Factor V (situational fears).