Concentration

Pronunciation

Definition 1

In science, the amount of a substance, such as a salt, that is in a certain amount of tissue or liquid, such as blood. A substance becomes more concentrated when less water is present. For example, the salt in urine may become more concentrated when a person doesn’t drink enough water. (NCI Dictionary)

Definition 2

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. (NCI Thesaurus)

Definition 3

Concentration of Drug, Contrast agent, or Infusate administered. (NCI Thesaurus/DICOM)

Definition 4

The quantity of a specified substance in a unit volume or weight of another substance. (NCI Thesaurus/CDISC)

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