air superiority

Air superiority is the dominance in the air power of one side's air forces over the other side's during a military campaign. It is defined in the NATO Glossary as "That degree of dominance in the air battle of one force over another that permits the conduct of operations by the former and its related land, sea, and air forces at a given time and place without prohibitive interference by the opposing force." One should note that in military speak, air superiority is different from air supremacy.
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That degree of dominance in the air battle of one force over another which permits the conduct of operations by the former and its related land, sea and air forces at a given time and place without prohibitive interference by the opposing force. 1/2/73

Degré de maîtrise dans la bataille aérienne d'une force sur une autre qui permet à la première de mener des opérations avec ses moyens aériens, terrestres et maritimes, à un moment et en un lieu donnés, sans intervention prohibitive de la seconde. 1/2/73