effect - definition in the American English Dictionary - Cambridge Dictionaries Online

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English definition of “effect”

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effect

noun  us   /ɪˈfekt/

effect noun (RESULT)

[C/U] the result of a particular influence; something that happens because of something else: [C] The medicine had the effect of making me sleepy. [C] Cold water slows hurricane growth, but warm water has the opposite effect. [U] The new management actually has not had much effect on us.

effect noun (USE)

[U] (esp. of rules or laws) official or legal use: Winter parking rules are in effect (= must be obeyed) . All salary increases will take effect (= begin) in January.

effect

verb [T]  us   /ɪˈfekt/

effect verb [T] (ACHIEVE)

to achieve something and cause it to happen: It will take years to effect meaningful changes in the educational system.
(Definition of effect from the Cambridge Academic Content Dictionary © Cambridge University Press)
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