Definition of Nadir

Nadir: The lowest point. The nadir may refer, for example, to the lowest blood count after chemotherapy or the lowest concentration of a drug in the body.

Last Editorial Review: 3/19/2012

Search MedTerms:

Back to MedTerms online medical dictionary A-Z List
Pill Identifier Tool

Need help identifying pills and medications?
Use the pill finder tool on RxList.