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1. Dictionary

   Cus·tom·ar·y

   /ˈkəstəˌmerē/

   

   adjective

   • 1. according to the customs or usual practices associated with a particular society, place, or set of circumstances: "it is customary to mark an occasion like this with a toast" Similar usualtraditionalnormalconventionalfamiliaracceptedprevailingroutinefixedsetestablishedconfirmedeverydayordinarycommonstockwell worntime-honoredOpposite unusualexceptionalrare
   • ▪ according to a person's habitual practice: "I put the kettle on for our customary cup of tea" Similar usualaccustomedhabitualwontedregularOpposite unusualunaccustomed
   • ▪ established by or based on custom rather than common law or statute.

   noun

   • 1. another term for custumal historical

   Word Origin late Middle English (as a noun): from medieval Latin custumarius, from custuma, from Anglo-Norman French custume (see custom).

   Derivatives

   • 1. customariness noun

   Scrabble Points: 16

   • C

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   • S

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   • T

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   • O

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   • M

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   • A

     1

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   • Y

     4

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2. en.wikipedia.org › wiki › Randomized_controlled_trialRandomized controlled trial - Wikipedia

   en.wikipedia.org › wiki › Randomized_controlled_trial

   • Cached

   22 hours ago · A randomized controlled trial (or randomized control trial; [2] RCT) is a form of scientific experiment used to control factors not under direct experimental control. Examples of RCTs are clinical trials that compare the effects of drugs, surgical techniques, medical devices, diagnostic procedures, diets or other medical treatments.