plural of airworthiness directive

(grammar, in languages without cases) The noun or noun phrase that a verb is directly acting upon.

(grammar) A verb that agrees in person and number with the subject of a clause, by conjugation. Conjugation is a form of inflection.

An instruction given to an actor that tells the actor what should be done and in what manner to do it.

(travel) A flight in which the passenger makes intermediate stops but does not change aircraft. / (ornithology) A flight where the bird's altitude does not change significantly with each wingbeat.

(physics) An electric current that always flows in the same direction but may differ in intensity over time. / (physics) A constant electric current.

The ability of a vehicle to maintain its course, or remain under normal steering control, while subjected to directionally disturbing influences such as cross-winds, braking on irregular surfaces or turning.

Of a motion picture, originally released in a home video format (historically VHS) without being released to cinemas or broadcast on television.

(film) A film punctuation in which there is a direct instantaneous transition between one scene and the next.

(mathematics) coproduct in some categories, like abelian groups, topological spaces or modules