zero-zero

Adjective

 * 1)  Pertaining to the ejection of the occupant of an aircraft from a grounded stationary position (i.e. zero altitude and zero airspeed).
 * 2)  Pertaining to weather conditions of zero ceiling and zero visibility (i.e., opaque cloud all the way down to ground level), or to aircraft operations in such conditions.
 * 3)  Involving neither of two powers increasing their stockpile of nuclear weapons.
 * a zero-zero treaty
 * 1)  Pertaining to weather conditions of zero ceiling and zero visibility (i.e., opaque cloud all the way down to ground level), or to aircraft operations in such conditions.
 * 2)  Involving neither of two powers increasing their stockpile of nuclear weapons.
 * a zero-zero treaty
 * a zero-zero treaty