1. Relating to harmony or music; concordant; consonant. Harmonic triad, the common chord, or the chord of a note consisting of its third and perfect fifth.

Nuttall's Standard dictionary of the English language By Nuttall, P.Austin

• hermonie,
• harmonie,
• harmoic,
• harmonoy,
• harmoney,
• heronic,
• hermonic,
• hamonic,
• harmonal,
• hermonica,
• hamonica,
• armonic,
• harmonick,
• harmonia,
• harmon,
• shamonic,
• hartonic,
• hayrtonic,
• hairtonik,
• harminic

• harmony,
• harmoniser,
• harmonics,
• harriman,
• Harmon,
• harmonized,
• Harman,
• harmonical,
• Harryman,
• Harmann,
• harmonica,
• harmonise,
• harmonizer,
• harmonised,
• harmonious,
• harmonium,
• harmonize.

The adjective form of the word "harmonic" is "harmonious".

The plural of the "harmonic" can be the "harmonics".

The singular of the "harmonic" can be the "harmonic".