Synonyms/Hypernyms (Ordered by Estimated Frequency) of noun factor_iv

1 sense of factor iv

Sense 1
calcium ion, factor IV -- (ion of calcium; a factor in the clotting of blood)
       => calcium, Ca, atomic number 20 -- (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)
       => coagulation factor, clotting factor -- (any of the factors in the blood whose actions are essential for blood coagulation)