Pronunciation: (i-kwā'zhun, -shun),[key] —n. 1. the act of equating or making equal; equalization: the symbolic equation of darkness with death. 2. equally balanced state; equilibrium.
3. Math.an expression or a proposition, often algebraic, asserting the equality of two quantities.
4. Chem.a symbolic representation showing the kind and amount of the starting materials and products of a reaction.