noun
concentration
kon-suhn-TRAY-shuhn
noun
1
The ability to focus one's attention on a single task.
"The exam demands total concentration."
"His concentration slipped after the phone rang."
2
The amount of a substance present within a given volume or mixture.
"The lab measured the concentration of salt in the water sample."
3
(US) A student's chosen field of specialized study within a broader degree.
"She majored in biology with a concentration in genetics."
How to Use Concentration
Learner’s notesIn plain EnglishEither mental focus, the strength/density of a substance in a mixture, or (in US education) a specialized area of study.
Common pairings
lack of concentration
high concentration
a concentration in economics
Word Forms
concentrations plural
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The exam demands total _____.
Etymology
From New Latin concentrātiō, describing the act of bringing something to a single point — built from concentrate plus -ion.