Also known as: def.
DEF has various meanings in the Electronic Engineering category. Discover the full forms, definitions, and usage contexts of DEF in Electronic Engineering.
A control mechanism used to operate a mechanical ventilation system based upon the relative humidity in the home. Breach of a mortgage contract (not making the required payments). A choice made by a program when the user does not specify an alternative. Defaults are built into a program when a value or option must be assumed for the program to function. In reference to programs, to make a choice when the user does not specify an alternative.
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