Definition of Dilation
Dilation: The process of enlargement, stretching, or expansion. The word "dilatation" means the same thing. Both come from the Latin "dilatare" meaning "to enlarge or expand."Source: MedTerms™ Medical Dictionary
Last Editorial Review: 8/28/2013
Medical Dictionary Definitions A - Z
Search Medical Dictionary
Parenting and Pregnancy
Get tips for baby and you.