Iff

сокращение от identification friend or foe радиолокационная система опознавания самолётов и кораблей типа "свой - чужой"

Большой англо-русский словарь

Iff

сокращение от identification friend or foe радиолокационное опознавание (государственной принадлежности) цели, опознавание цели (типа) "свой - чужой"

Англо-русский политехнический словарь

Iff

conjunction Etymology: alteration of 1if if and only if Example: two figures are congruent iff one can be placed over the other so that they coincide

Merriam-Webster's Collegiate Dictionary

Iff

abbreviation identification, friend or foe

Merriam-Webster's Collegiate Dictionary

Iff

1. Interchange File Format. 2. Identify friend or foe (radar).

Free Online Dictionary of Computing

Iff

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.

Free Online Dictionary of Computing