[in-ter-moj-uh-ley-shuh
n, -mod-yuh-] 
| the production in an electrical device of frequencies that are the sums or differences of frequencies of different inputs or of their harmonics. |
| in·ter·mod·u·la·tion (ĭn'tər-mŏj'ə-lā'shən) n. Modulation of the frequencies of electromagnetic waves occurring when the waves interact as they are transmitted through a nonlinear electronic system. |