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   reactive

   /rɪˈaktɪv/

   adjective

   • 1. showing a response to a stimulus: "pupils are reactive to light"
   • ▪ showing an immune response to a specific antigen: "lysosomal activity can activate B lymphocytes reactive against self-components"
   • ▪ (of a disease or illness) caused by a reaction to something: "reactive arthritis"
   • ▪ having a tendency to react chemically: "nitrogen dioxide is a highly reactive gas"
   • 2. acting in response to a situation rather than creating or controlling it: "a proactive rather than a reactive approach"
   • 3. relating to reactance: "a reactive load"

   Derivatives

   • 1. reactiveness noun

   Scrabble Points: 13

   • R

     1

   • E

     1

   • A

     1

   • C

     3

   • T

     1

   • I

     1

   • V

     4

   • E

     1

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