n.
Pronunciation: ˌ kän(t)-s ə n- ' tr ā -sh ə n, - ˌ sen-
Function: noun
Date: 1634
1 a : the act or process of concentrating : the state of being concentrated especially : direction of attention to a single object b : an academic major or area of focus within a major
2 : a concentrated mass or thing
3 : the amount of a component in a given area or volume