concentration
n. C / Un. the ability to give all your attention to one single task. It also means a large amount of something gathered in one specific place.
n. the action or power of focusing all one's attention; alternatively, the relative amount of a particular substance contained within a solution or mixture.
I need total concentration to finish this difficult report.
The high concentration of tech companies in the city center has driven up local rents significantly.
Maintaining deep concentration during a lecture requires not only interest in the subject matter but also a physical environment free from digital distractions.
From New Latin concentrātiō (“(1550) action or an act of coming together at a single place; (1659) extraction or separation of one or more of the metals present in an alloy”). Compare French concentration, Spanish concentración, Italian concentrazione (last quarter of 16th century). Equivalent to concentrate + -ion. By surface analysis, con- + centre + -ate + -ion.
Uncountable when referring to the mental faculty of focusing; countable when referring to a specific cluster of things or a chemical measurement.
I lost my concentrateI lost my concentrationLearners often use the verb 'concentrate' when the noun 'concentration' is required.