Meaning of “half step” in the English Dictionary

british dictionary

"half step" in British English

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half stepnoun [ C ]

uk /ˈhɑːf ˌstep/ us /ˈhæf ˌstep/ US UK semitone

(Definition of “half step” from the Cambridge Advanced Learner’s Dictionary & Thesaurus © Cambridge University Press)

"half step" in American English

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half stepnoun [ C ]

/ˈhæf ˌstep/

music the smallest difference in sound between two notes that are next to each other in a musical scale (= series of notes)

(Definition of “half step” from the Cambridge Academic Content Dictionary © Cambridge University Press)