wavelength
Meaning
the distance between two successive crests of a wave, especially points in a sound wave or electromagnetic wave.
a particular way of thinking or a shared understanding, especially in informal contexts.
Structure
Usage
different colors of light correspond to different wavelengths.
the radio station broadcasts on a wavelength of 102.5 mhz.
we're just not on the same wavelength when it comes to planning this project.
Etymology
The term is a Modern English compound, formed by combining two native English elements. 'wave' originates from the Old English verb 'wafian', meaning to move to and fro, which itself has Proto-Germanic roots. 'length' derives from the Old English 'lengthu', a nominal form of the adjective 'lang' (long), tracing back to the Proto-Indo-European root dlongʰos-. The compound 'wavelength' was coined in the early 19th century within the field of physics to provide a precise term for a measurable property of periodic waves. Its figurative use, describing a shared perspective or mental harmony, emerged in the mid-20th century, metaphorically extending the idea of being tuned to the same frequency.
Analysis
wave (from old english 'wafian' meaning to wave, fluctuate; functional role: base noun denoting an undulating motion). length (from old english 'lengthu', derived from 'lang' meaning long; functional role: noun suffix denoting a measurement of extent).