1. the distance between successive crests of a wave, especially points in a sound wave or electromagnetic wave
Usage: physics; technical
2. a person’s ideas or way of thinking, especially in relation to their ability to communicate with others
Usage: informal; figurative

Examples

• Different colors of light have different wavelengths.
• Radio stations broadcast on specific wavelengths.
• The wavelengths of visible light range from about 400 to 700 nanometers.
• We’re not on the same wavelength about this project.
• The teacher and student seemed to be on different wavelengths.
• Scientists measured the wavelengths of the sound waves.
• It took time for the team members to get on the same wavelength.