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Meaning of effective

ef•fec•tive

Pronunciation: (i-fek'tiv), [key]
— adj.
  1. adequate to accomplish a purpose; producing the intended or expected result: effective teaching methods; effective steps toward peace.
  2. actually in operation or in force; functioning: The law becomes effective at midnight.
  3. producing a deep or vivid impression; striking: an effective photograph.
  4. prepared and available for service, esp. military service.
—n.
  1. a member of the armed forces fit for duty or active service.
  2. the effective total of a military force.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.
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