IFF

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IFF

McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.

IFF

(file format)

IFF

(2)
Identify friend or foe (radar).

iff

(mathematics, logic)
if and only if, i.e. necessary and sufficient. For example, two figures are congruent iff one can be placed over the other so that they coincide.
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