chord

In music, a group of three or more notes sounded together. This ‘vertical’ combination of notes (of any number) is almost infinite in possibility, and yet is fundamental in determining a style of music. This goes some way to explaining the enormous variation of music in existence.

chord

In geometry, a straight line joining any two points on a curve. The chord that passes through the centre of a circle (its longest chord) is the diameter. The longest and shortest chords of an ellipse (a regular oval) are called the major and minor axes, respectively.