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1. Dictionary

   duality

   /djuːˈalɪti/

   noun

   • 1. the quality or condition of being dual: "this duality of purpose was discernible in the appointments"
   • ▪ the property of two theorems, expressions, etc., of being dual to each other.
   • ▪ the quantum-mechanical property of being regardable as both a wave and a particle.
   • 2. an instance of opposition or contrast between two concepts or two aspects of something; a dualism: "his photographs capitalize on the dualities of light and dark, stillness and movement"

   Word Origin late Middle English: from late Latin dualitas, from dualis (see dual).

   Scrabble Points: 11

   • D

     2

   • U

     1

   • A

     1

   • L

     1

   • I

     1

   • T

     1

   • Y

     4

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