Etymology

spectro-

Today it means: optical spectra. Full definition →

English spectrum ← Latin spectrum ← Proto-Italic *spekjō
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The story

  1. Proto-Indo-European*speḱ-
  2. Proto-Indo-European*spéḱyeti
  3. Proto-Italic*spekjō
  4. Latinspeciō
  5. Latinspectrum
  6. Englishspectrum
  7. English todayspectro-

From spectrum.

Etymology from Wiktionary, CC BY-SA 4.0.