English
spectroradiometer
From spectro- + radiometer.
A compound of spectro- + radiometer
Proto-Indo-European *speḱ- ‘to see, to look, to observe’
…
Proto-Italic *spekjō ‘to observe, see’
Latin speciō ‘to observe, watch, look at’
Latin spectrum ‘apparition, specter, phantom’
English spectrum
English spectro-
Today it means
noun A device that measures the spectral power distributions of illuminants, used to evaluate and categorize lighting or to calibrate display technology.
Sources
Sources: Wiktionary, “spectroradiometer”. By Wiktionary contributors, CC BY-SA 4.0, via kaikki.org (dump of Oct 3 2026); text adapted and restructured. Language periods are conventional ranges, not dates for this word. License.
Etymograph / spectroradiometer