To consider or describe as similar, equal, or analogous; to liken. Many people equate wealth with happiness, but they are not necessarily the same.
To make equal or equivalent; to balance. The accountant worked hard to equate the company's expenses with its income.
To set (two or more quantities) equal to each other, especially in mathematics, usually as part of solving an equation. To find x, equate the two expressions and solve the resulting equation.
To be equal or equivalent, often followed by the preposition 'to'. In many countries, one euro roughly equates to one U.S. dollar.