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.”

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Disclaimer: MDI definition / meaning should not be considered complete, up to date, and is not intended to be used in place of a visit, consultation, or advice of a legal, medical, or any other professional. All content on this website is for informational purposes only.