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Millimeter (mm)

A millimeter measures length that is equal to 1/10 of a centimeter. It also equals 0.04 inch. There are 25.4 millimeters in one inch.

By Healthwise Staff
Primary Medical Reviewer Anne C. Poinier, MD - Internal Medicine
Specialist Medical Reviewer Thomas M. Bailey, MD - Family Medicine
Last Revised May 6, 2011

WebMD Medical Reference from Healthwise

Last Updated: May 06, 2011
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