(archaic, uncountable) Authorship. / (countable, uncountable) A habit or practice of an author.

(computing) Capable of being authored.

plural of authorism

Misspelling of authoritative.

(computing) An organization that issues digital certificates for use by other parties.

(aviation) The degree of control that the ailerons can exert over the rolling motion of an aircraft; related to aileron design and airspeed.

(aviation) The degree of control that the rudder can exert over the yawing motion of an aircraft; related to rudder design and airspeed.

(aviation) The degree of control that the elevators can exert over the pitching motion of an aircraft; related to elevator design and airspeed.

An organisation charged by the governing body of a country or region with the provision of postal services within that region.

Right or permission authorized verbally rather than in writing.