Where does “tristimulus” come from?

tristimulus (English) comes from English stimulus, from Latin stimulus, from Proto-Indo-European stey- — to stick; compress; condense.

tristimulus (English): A set of three stimuli, especially the red, green...

Definitions

  1. A set of three stimuli, especially the red, green...

Ancestry of “tristimulus”, step by step

tristimulus traces back through two separate lines of ancestry.

via English stimulus

StepLanguageWordMeaning
1EnglishstimulusAny external phenomenon that has an influence on...
2Latinstimulusa goad, prick; a sting; stimulus, incentive
3Proto-Indo-Europeanstey-to stick; compress; condense

via English tri

StepLanguageWordMeaning
1Englishtritriathlon; triangle
2Proto-Indo-Europeantréyesthree
Every word from Proto-Indo-European stey- →Every word from Latin stimulus →Every word from English stimulus →