(art, uncountable) A genre of modern art in which the paint is dribbled, splashed or poured onto the canvas to obtain a spontaneous and totally abstract image.

Of, pertaining to, or depicting action, especially physical action. / (grammar, of a verb) Depicting an action having an agent and a patient.

The characteristic of being actionable.

Viennese Actionism, a school of art which started in Vienna, Austria. / The ideology of 1960s Radicals.

(chiefly Britain) A workplace protest by employees designed to inconvenience or disrupt the business of the employer.

Lacking action; particularly with respect to entertainment, dull, boring.

A word that expresses action and tells what the subject of a sentence does.

(cinematography) The traditional cue to the members of a film crew at the beginning of a take.

To act; to act positively and decisively to resolve a problem.

(physiology) A short-term change in the electrical potential that travels along a cell such as a nerve or muscle fiber.