Word parts band + width Pronunciation IPA (key): /ˈbændwɪdθ/ or /ˈbændwɪtθ/ Audio (US)(file) Noun Singular bandwidth Plural bandwidths The bandwidth is the width of a frequency band. (computing) (informal) Bandwidth is the speed of data flow in digital networks measured in bits per second. Synonym: bitrate Wikiwand - on Seamless Wikipedia browsing. On steroids.Remove ads