Pronunciation (US) IPA (key): /æk.ˌsɛl.ə.ˈrɑm.ə.tɚ/ or /ɪk.ˌsɛl.ə.ˈrɑm.ə.tɚ/ Audio (US)(file) Noun Singular accelerometer Plural accelerometers (countable) An accelerometer is a device that is used to measure acceleration. Related words accelerate Wikiwand - on Seamless Wikipedia browsing. On steroids.Remove ads