equalize

Concise Oxford English Dictionary © 2008 Oxford University Press:
equalize /ˈiːkwəlʌɪz/ (or equalise)

▶verb

• 1 make or become equal.

• 2 Brit. level the score in a match by scoring a goal.

• 3 Electronics correct or modify (a signal) with an equalizer.

– derivatives
equalization noun.

– origin C16: from equal + -ize, partly suggested by Fr. égaliser.