equalize

Etymology

From equal + -ize.

verb

1. (transitive) To make equal; to cause to correspond in amount or degree.
   to equalize accounts, burdens, or taxes
   One poor moment can suffice / To equalize the lofty and the low. 1815, William Wordsworth, Epitaph 3
   No system of instruction will completely equalize natural powers. 1828, Richard Whately, Elements of Rhetoric
2. (obsolete, transitive) To be equal to; to equal, to rival.
3. (intransitive, sports) To make the scoreline equal by scoring points.
4. (underwater diving) To clear the ears to balance the pressure in the middle ear with the outside pressure by letting air enter along the Eustachian tubes.
5. (category theory) Said of a morphism: to pre-compose with each of a parallel pair of morphisms so as to yield the same composite morphism.
6. (signal processing) To adjust the balance between frequency components within an electronic signal.
   The technique for frequency slewing of a transient is different from that for vibration testing in that it is necessary to equalize at low level as the clock frequency is slewed in relatively small increments from the nominal to the desired frequency. 1987, The Shock and Vibration Bulletin - Volume 57, Parts 1-4, page 35