NCIt definition : The quantity of a substance per unit volume or weight; a measure of the amount of
substance present in a unit amount of mixture, particularly, the amount of solute
dissolved in a solvent. The amounts can be expressed as moles, masses, volumes, or
parts.;
Alternative definition : DICOM: Concentration of Drug, Contrast agent, or Infusate administered.; CDISC: The quantity of a specified substance in a unit volume or weight of another
substance.;