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(1) (Monochrome Display Adapter) The first IBM PC monochrome video display standard for text. Due to its lack of graphics, MDA cards were often replaced with Hercules cards, which included graphics. See Hercules Graphics and VGA.

(2) (Model Driven Architecture) See Object Management Architecture.

(3) (Mechanical Design Automation) Applications that help automate the design and engineering processes from concept to manufacturing. Automotive, aerospace and discrete manufacturing are examples of industries that use MDA.

(4) (Modular Digital Architecture) An earlier snap-together, building-block approach for adding peripherals to a PC from NeoSystems, Inc.
References in periodicals archive ?
Frequent contaminants that are found in Ecstasy (methylenedioxymethamphetamine; MDMA) are aspirin, caffeine, methylenedioxyamphetamine (MDA), paramethoxyamphetamine, phencyclidine (PCP), and heroin.
The assay screens urine for the following illegal substances: methylenedioxymethamphetamine (MDMA, or "Ecstasy"), methylenedioxyethylamphetamine (MDEA) and methylenedioxyamphetamine (MDA).
Effectiveness of multiple internal standards: deuterated analogues of methylenedioxymethamphetamine, methylenedioxyamphetamine, meth amphetamine, and amphetamine.
Confirmatory tests for (meth)amphetamine were considered positive when amphetamine, methamphetamine, ephedrine, pseudoephedrine, phenylpropanolamine, methylenedioxymethamphetamine, or methylenedioxyamphetamine was detected by a single confirmatory technique.