Cancermillimeter Share Tweet A measure of length in the metric system. A millimeter is one thousandth of a meter. There are 25 millimeters in an inch.( MIH-luh-MEE-ter )Source: NCI Dictionary of Cancer TermsSearch the Glossary of Medical Terms Previous: milliliter Next: millimole NewsletterSign up for the QuackTrack.org newsletter below! Click to commentLeave a Reply Cancel replyYour email address will not be published. Required fields are marked *Comment *Name * Email * Website Save my name, email, and website in this browser for the next time I comment. Δ QuackTrack on TwitterTweets by QuackTrack_org Trending Posts