Definition of Rule out

Rule out: Term used in medicine, meaning to eliminate or exclude something from consideration. For example, a normal chest x-ray may "rule out" pneumonia.


Last Editorial Review: 5/13/2016

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.


Health Solutions From Our Sponsors