n.
Pronunciation: d ī - ' lü-sh ə n, d ə -
Function: noun
Date: 1646
1 : the action of diluting : the state of being diluted
2 : something (as a solution) that is diluted
3 : a lessening of real value (as of equity) by a decrease in relative worth specifically : a decrease of per share value of common stock by an increase in the total number of shares