Dictionary.com
Thesaurus.com

MDA

American  
Pharmacology.

  1. methylene dioxyamphetamine: an amphetamine derivative, C 1 0 H 1 3 NO 2 , having hallucinogenic and stimulant properties.

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

MDA also signed a memorandum of understanding with South Korea’s Hanwha Systems to develop a low-Earth orbit defense constellation.

From The Wall Street Journal • Mar. 11, 2026

MDA Space, a Toronto-based firm, launched a $300 million initial public offering on the New York Stock Exchange.

From The Wall Street Journal • Mar. 11, 2026

MDA is already listed on the Toronto Stock Exchange.

From The Wall Street Journal • Mar. 11, 2026

Canadian defense stocks Bombardier, CAE, and MDA have surged an average of 86% over 12 months.

From Barron's • Feb. 18, 2026

The MDA has said that the initial awards for the Shield program, which has a budget ceiling of $151 billion, are designed to establish a portfolio of qualified firms.

From MarketWatch • Jan. 16, 2026

Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023

Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.