adj. 1 of logic or formal argument. 2 not contravening the laws of thought, correctly reasoned. 3 deducible or defensible on the ground of consistency; reasonably to be believed or done. 4 capable of correct reasoning. logical atomism Philos. the theory that all propositions can be analysed into simple independent elements. logical necessity the compulsion to believe that of which the opposite is inconceivable. logical positivism (or empiricism) a form of positivism in which symbolic logic is used and linguistic problems of meaning are emphasized. logicality n. logically adv.
[ med.L logicalis f. LL logica (as LOGIC) ]