Spectrum etymology


English word spectrum comes from Proto-Indo-European *speḱ-, Proto-Indo-European - -yeti, and later Proto-Indo-European *spéḱyeti (To be looking at, to keep looking at.)

Etymology of spectrum

Detailed word origin of spectrum

Dictionary entry Language Definition
*speḱ- Proto-Indo-European (ine) to look
- -yeti Proto-Indo-European (ine)
*spéḱyeti Proto-Indo-European (ine) To be looking at, to keep looking at.
*spekjō Proto-Italic (itc-pro) To observe, to see.
specio Latin (lat) I observe, watch, look at.
spectrum Latin (lat) Apparition, specter. Appearance, image.
spectrum English (en) (chemistry) The pattern of absorption or emission of radiation produced by a substance when subjected to energy (radiation, heat, electricity, etc.).. (mathematics, functional analysis) Of a bounded linear operator A, the set of scalar values λ such that the operator A—λI, where I denotes the identity operator, does not have a bounded inverse; intended as a generalisation of the linear [...]

Words with the same origin as spectrum