Definition of "in effect" []

• Operating or functioning; in force; in play. (adjective)
• For all practical purposes; in practice; virtually; essentially; basically. (adverb)

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• "Although London utilized one of our military satellites to communicate with its fleet as it headed for the Falk-lands, this was done under an agreement that had been in effect long before the crisis."
• "On October 31, 1941 Leigh Noyes, the Director of Naval Communications, wrote that the AD code was in effect until October 1940 and that it was used by all Japanese naval units for administrative matters not covered by special systems."
• "According to Japanese naval records, the 5-Num code in effect from July 1, 1941 to December 4, 1941 was known as Ango Sho D Navy Code Book D, additive version 7."