micromolar
/ˌmaɪkrəʊˈmɒlər/Definitions
1. adjective
relating to or denoting a concentration of a substance in a solution that is one millionth of a molar concentration
“The researcher measured the micromolar levels of the enzyme in the sample.”
2. noun
a concentration of a substance in a solution that is one millionth of a molar concentration
“The micromolar of the substance was used to treat the patient’s condition.”