Where does “re-refine” come from?

re-refine (English) comes from English re, from English reinsurance, from English re-, from Middle English re-, from Old French re-, from Latin rĕ-, from Latin prōdūcō, from Latin prō- — passed , crossed.

Ancestry of “re-refine”, step by step

re-refine traces back through two separate lines of ancestry.

via English re

StepLanguageWordMeaning
1EnglishreAbout, regarding, with reference to; especially...
2EnglishreinsuranceInsurance purchased by insurance companies that...
3Englishre-again, anew; a completive or intensification of...
4Middle Englishre-
5Old Frenchre-re- again; once more
6Latinrĕ-back, backwards
7Latinprōdūcōto lead or bring forth, forward or out
8Latinprō-forward direction, forward movement
9Proto-Italic*pro-pro- see the Latin entry for further meanings
10Proto-Indo-Europeanpro-toward, forward
11Proto-Indo-Europeanpor-to give birth; forward, through; going, passage
12Proto-Indo-Europeanper-before, in front; first; to go through
13Proto-Indo-Europeanpr̥tóspassed , crossed

via English refine

StepLanguageWordMeaning
1EnglishrefineTo purify; reduce to a fine, unmixed, or pure...
2EnglishfineSenses referring to subjective quality; Senses...
3Germanfeinfine; fine; very good; as it should be; refined;...
4Middle High Germanfīn
5Old Frenchfinfine, delicate
6Latinfīnisend
7Proto-Indo-Europeandʰnh₂-
Every word from Proto-Indo-European pr̥tós