Definition of synthesizer noun from the Oxford Advanced Learner's Dictionary



(British English also -iser) noun
BrE BrE//ˈsɪnθəsaɪzə(r)//
; NAmE NAmE//ˈsɪnθəsaɪzər//
(informal synth)
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an electronic machine for producing different sounds. Synthesizers are used as musical instruments, especially for copying the sounds of other instruments, and for copying speech sounds. a speech synthesizer compare keyboard
See the Oxford Advanced American Dictionary entry: synthesizer