- 1[countable] (mathematics) a statement showing that two amounts or values are equal, for example 2x + y = 54
- 2[uncountable, singular] the act of making something equal or considering something as equal (= of equating them) The equation of wealth with happiness can be dangerous.
- 3[countable, usually singular] 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.
Check pronunciation: equation