1. Of light, having more than one wavelength 
2. Having more than one colour

Encyclopedia: Heterochromatic

• diagonalise
• diagonalizable
• diagonalization
• diagonalize
• diagonally
• diagram
• diagrammatic
• diagrammatical
• diagrammatically
• diagramming
• diagraph
• diakinesis
• dial
• dial phone
• dial telephone
• dial tone
• dial-up
• dialect
• dialect atlas
• dialect geography
• dialectal
• dialectic
• dialectical
• dialectical materialism
• dialectically