wavelength
- 01 B2 Upper Intermediate
the distance between two peaks of a wave, like light or sound.
the distance between successive crests or troughs of a wave, particularly of electromagnetic radiation or sound.
Simple“Different colours of light have different wavelengths.”
In context“The telescope is designed to detect infrared radiation at a specific wavelength that is normally invisible to the human eye.”
UsageOften used with the preposition 'at'.
- 02 B2 Upper Intermediate
a way of thinking or a set of ideas that you share with someone else.
a state of agreement or mutual understanding regarding ideas, feelings, or philosophy.
Simple“We work well together because we are on the same wavelength.”
In context“It was refreshing to meet a business partner who was on the same wavelength regarding the long-term sustainability of the project.”
UsageAlmost always used in the phrase 'on the same wavelength'.
Usage wavelengths of light
From wave + length.
Etymology adapted from Wiktionary, available under CC BY-SA 4.0.