Concentration
/kˌɑnsəˈntreɪʃən/
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Definition
(noun) The act, process or ability of concentrating; the process of becoming concentrated, or the state of being concentrated.
Sentence Examples
Even a small sound from the TV interferes with my concentration.
It's the sort of work that calls for a high level of concentration.
CEFR Practice Quiz
Solving that massive jigsaw puzzle requires intense mental ____.