actualist See MODAL LOGIC.

actuality See POSSIBLE WORLDS.

actualization, first See ARISTOTLE.

actualization, second See ARISTOTLE.

actual occasion See WHITEHEAD.

actual reality See REALITY.

act utilitarianism See UTILITARIANISM.

Adam de Wodeham See WODEHAM.

adaptation See DARWINISM.

adaptive system See COMPUTER THEORY.

Adelard of Bath (c.1070–c.1145), English Benedictine monk notable for his contributions to the...

adequacy, analytic See MATERIAL ADEQUACY.

action at a distance See FIELD THEORY.

action theory the study of the ontological structure of human action, the...

act(ion)-token See ACTION THEORY.

act(ion)-type See ACTION THEORY, TYPE THEORY.

action verb a verb applied to an agent and describing an activity,...

active euthanasia See EUTHANASIA.

active power See POWER.

activity verb See ACTION VERB.

act-object distinction See BRENTANO, MEINONG.

act-object psychology also called act-contentobject psychology, a philosophical theory that identifies in...

act of commission See ACTION THEORY.

act of omission See ACTION THEORY.

actual infinite See ARISTOTLE.

acrasia See AKRASIA.

act-content-object-psychology See ACT-OBJECT PSY-. CHOLOG.

act, propositional See INTENTIONALITY.

act, voluntary See ACTION THEORY.

action, basic See PHILOSOPHY OF ACTION.