Where does “unpremultiply” come from?

unpremultiply (English) comes from English premultiply, from English multiply, from English ply, from English apply, from Middle English aplien, from Old French applier, from Latin applicō, from Latin ad- — in.

unpremultiply (English): To divide a premultiplied matrix by a preceding...

Definitions

  1. To divide a premultiplied matrix by a preceding...

Ancestry of “unpremultiply”, step by step

unpremultiply traces back through two separate lines of ancestry.

via English premultiply

StepLanguageWordMeaning
1EnglishpremultiplyTo multiply a matrix by a preceding factor...
2EnglishmultiplyTo increase the amount, degree or number of; To...
3EnglishplyA layer of material; A strand that, twisted...
4EnglishapplyTo lay or place; to put; To put to use; to use or...
5Middle Englishaplien
6Old Frenchapplierto bend; to apply
7Latinapplicōto apply
8Latinad-to; usually prefixed to verbs, in which cases it...
9Latinīn-un-, non-, not
10Latinînin, at, on, upon, from (space)
11Latinenlookǃ beholdǃ; reallyǃ?; come onǃ
12Proto-Italicenin
13Proto-Indo-Europeanh₁énin

via English un

StepLanguageWordMeaning
1EnglishunOne
Every word from Proto-Indo-European h₁énEvery word from Latin īn-Every word from Latin ad-