say it: MAWJ-yoo-layt
modulate is a verb meaning "change the key of, in music". It carries 5 recorded senses.
adjust the pitch, tone, or volume of
vary the frequency, amplitude, phase, or other characteristic of (electromagnetic waves)
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 modulate 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.