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con·cen·tra·tion

concentration

 
 
pronunciation:
kan sn treI shn
features:
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part of speech: noun
definition 1: the act or process of concentrating, or the state of being concentrated.
The concentration of animals around the watering hole allowed the explorers to see many different kinds of animals at once.
definition 2: close attention; focused mental energy.
This problem is difficult and demands your concentration.
similar words:
attention
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See
  energy, thought