note value
nounUK /nəʊt ˈvæljuː/
US /noʊt ˈvæljuː/
A note value tells you how long a musical note lasts.
A whole note has a longer note value than a quarter note.
OTHER MEANINGS
2. The length of time a written note is held in music.
The teacher asked us to clap each note value in the song.
3. The relative duration of a note compared with other notes.
The note value of a half note is twice that of a quarter note.
4. A symbol's worth in terms of beats within a measure.
In four-four time, the note value of a quarter note is one beat.