1 [C] (mathematics) a statement showing that two amounts or values are equal, for example 2ﾗ + y = 54
2 [U,sing.] the act of making sth equal or considering sth as equal (= of equating them):
The equation of wealth with happiness can be dangerous.
3 [C,usually sing.] a problem or situation in which several things must be considered and dealt with:
When children enter the equation, further tensions may arise within a marriage.
