say it: EE-kwuh-lahy-zur
equalizer is a noun meaning "electronic equipment that reduces frequency distortion". It carries 3 recorded senses.
electronic equipment that reduces frequency distortion
a weight that balances another weight
a score that makes the match even
Forms marked · are formed by the regular rule rather than recorded in the source data. English keeps a few hundred irregulars and the rest follow the pattern, so the rule is right far more often than not — but it is a rule, and the mark says so.
Definitions, synonyms and semantic relations for equalizer come from Princeton University’s WordNet. The pronunciation comes from the CMU Pronouncing Dictionary. Commonness is measured against a corpus of everyday English. Full sources and licences.