Meaning of CONCENTRATION in English
/ ˌkɒnsnˈtreɪʃn; NAmE ˌkɑːn-/ noun
[ U ] the ability to direct all your effort and attention on one thing, without thinking of other things :
This book requires a great deal of concentration.
Tiredness affects your powers of concentration.
[ U ] concentration (on sth) the process of people directing effort and attention on a particular thing :
a need for greater concentration on environmental issues
[ C ] concentration (of sth) a lot of sth in one place :
a concentration of industry in the north of the country
[ C , U ] the amount of a substance in a liquid or in another substance :
glucose concentrations in the blood
Oxford Advanced Learner's English Dictionary. Оксфордский английский словарь для изучающик язык на продвинутом уровне. 2005