English
trispectrum
From tri- + spectrum.
Proto-Indo-European *speḱ- ‘to see, to look, to observe’
Proto-Indo-European *spéḱyeti ‘to be looking at, to keep looking at’
Proto-Italic *spekjō ‘to observe, see’
Latin speciō ‘look at, view’
Latin spectrum ‘appearance, image, apparition’
English spectrum
Today it means
noun A certain type of statistic used to analyze nonlinear interactions
Sources
Sources: Wiktionary, “trispectrum”. 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 / trispectrum