Where does “grayscale” come from?

Grayscale combines English grey, from Proto-Indo-European gʰer-, with English scale, from Latin scala, itself from Latin scadla and Latin scandere, ultimately from Proto-Indo-European (s)kel-.

grayscale (English): A printed strip of graduated tones used to check...

Definitions

  1. A printed strip of graduated tones used to check...

Ancestry of “grayscale”, step by step

grayscale traces back through two separate lines of ancestry.

via English scale

StepLanguageWordMeaning
1EnglishscaleA ladder; a series of steps; a means of...
2Middle Englishscaleflake
3Latinscālaladder
4Latinscanderethird-person plural perfect active indicative of...
5Latinscandōto climb, ascend, mount
6Proto-Indo-Europeansḱend-to jump up, ascend

via English Gray

StepLanguageWordMeaning
1EnglishGrayoriginally a nickname for someone with a gray beard or hair
2LatinGraecusGreek, Grecian, of or pertaining to the Greek...
3Ancient GreekΓραικόςGreek; a Graecian, a member of an ancient...
4Ancient GreekγραῖαGraea, Boeotia; Greece
5Proto-Indo-Europeanǵerh₂-to grow old, to mature
Every word from Proto-Indo-European sḱend-