something that is produced by an agency or cause; result; consequence:
Exposure to the sun had the effect of toughening his skin.
power to produce results; efficacy; force; validity; influence:
His protest had no effect.
the state of being operative or functional; operation or execution; accomplishment or fulfillment:
to bring a plan into effect.
a mental or emotional impression produced, as by a painting or a speech.
meaning or sense; purpose or intention:
She disapproved of the proposal and wrote to that effect.
the making of a desired impression:
We had the feeling that the big, expensive car was only for effect.
an illusory phenomenon:
a three-dimensional effect.
a real phenomenon (usually named for its discoverer):
the Doppler effect.
verb (used with object)
to produce as an effect; bring about; accomplish; make happen:
The new machines finally effected the transition to computerized accounting last spring.
something that is produced by a cause or agent; result
power or ability to influence or produce a result; efficacy: with no effect
the condition of being operative (esp in the phrases in or into effect): the law comes into effect at midnight
take effect, to become operative or begin to produce results
basic meaning or purpose (esp in the phrase to that effect)
an impression, usually one that is artificial or contrived (esp in the phrase for effect)
a scientific phenomenon: the Doppler effect
the overall impression or result: the effect of a painting
(transitive) to cause to occur; bring about; accomplish
late 14c., “a result,” from Old French efet (13c., Modern French effet) “result, execution, completion, ending,” from Latin effectus “accomplishment, performance,” from past participle stem of efficere “work out, accomplish,” from ex- “out” (see ex-) + facere “to do” (see factitious).
Meaning “impression produced on the beholder” is from 1736. Sense in stage effect, sound effect, etc. first recorded 1881. The verb is from 1580s. Related: Effecting; effection.
effect ef·fect (ĭ-fěkt’)
v. ef·fect·ed, ef·fect·ing, ef·fects
- Effective conjugate
effective conjugate ef·fec·tive conjugate (ĭ-fěk’tĭv) n. The conjugate measured from the nearest lumbar vertebra to the pubic symphysis. Also called false conjugate.
- Effective computable
theory A term describing a function for which there is an effective algorithm that correctly calculates the function. The algorithm must consist of a finite sequence of instructions. (1996-05-03)
noun, Electricity. 1. the magnitude of an alternating current having the same heating effect as that of a given magnitude of direct current.
noun 1. the amount of a drug, or level of radiation exposure, that is sufficient to achieve the desired clinical improvement. effective dose n. Abbr. ED The dose, usually of a drug, that produces a desired effect.