Where does “desaturation” come from?

Desaturation comes from English de- (prefix meaning removal) plus saturation, ultimately tracing to Proto-Indo-European de (away, from).

desaturation (English): the conversion of a saturated compound to an...

Definitions

  1. the conversion of a saturated compound to an...

Ancestry of “desaturation”, step by step

desaturation traces back through two separate lines of ancestry.

via English saturation

StepLanguageWordMeaning
1EnglishsaturationThe act of saturating or the process of being...
2Late Latinsaturatio
3Latin-tiōtion, -ation, -ing
4Latindissertātiō(spoken) dissertation, discourse, disquisition
5Latindissertusarranged, disposed; explained
6Latindissereresecond-person singular future passive indicative...
7Latindis-asunder, apart, in two; reversal, removal;...
8Latincalceusshoe
9Latincalxlimestone; chalk; the finish line
10Ancient Greekχάλιξsmall stone, pebble; gravel, rubble

via French saturation

StepLanguageWordMeaning
1Frenchsaturationsaturation
Every word from Ancient Greek χάλιξEvery word from Latin -tiōEvery word from Latin dis-