half step

US /ˈhæf ˌstep/
UK /ˈhæf ˌstep/
"half step" picture
1.

semitono

a musical interval of a semitone

:
The melody uses a lot of half steps, creating a dissonant sound.
La melodía utiliza muchos semitonos, creando un sonido disonante.
To play a minor chord, you often lower the third note by a half step.
Para tocar un acorde menor, a menudo bajas la tercera nota un semitono.