- Highest point in a plane or solid figure, relative to a base line or plane
- Highest level of a hierarchy or other structure of power regarded as a triangle or pyramid
- Balance in tuned
- Overtone accompanying a fundamental tone at a fixed interval, produced by vibration of a string, column of air
- Exact fraction of its length.
Note produced on a musical instrument as an overtone, by lightly touching a string while sounding it “Pinch harmonics on a guitar”
Physicsa component frequency of an oscillation or wave.