Etymograph

English

spectroradiometry

From spectro- + radiometry.

Formed from spectro- + radiometry

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 The measurement of the intensity or energy of electromagnetic radiation at different wavelengths

Sources

Sources: Wiktionary, “spectroradiometry”. 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 / spectroradiometry