Definition of MDI
MDI: 1. Metered-dose inhaler; 2. Multiple daily injections; 3. Mental developmental index, as in "the Bayley Mental Developmental Index (MDI), which measures language, memory, and problem-solving abilities."
Source: MedTerms™ Medical Dictionaryhttp://www.medterms.com/script/main/art.asp?articlekey=25818
Last Editorial Review: 6/14/2012
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