Where does “reenergisation” come from?

reenergisation (English) comes from English energisation, from English energise, from English energy, from Middle French énergie, from Late Latin energia, from Ancient Greek ἐνέργεια, from Ancient Greek ἐνεργής, from Ancient Greek ἐνεργός — Creates collective nouns, which refer to groups...

Ancestry of “reenergisation”, step by step

reenergisation traces back through two separate lines of ancestry.

via English energisation

StepLanguageWordMeaning
1EnglishenergisationAlternative form of energization
2EnglishenergiseAlternative form of energize
3EnglishenergyThe impetus behind all motion and all activity;...
4Middle Frenchénergie
5Late Latinenergiaenergy; efficiency
6Ancient Greekἐνέργειαactivity, operation, vigour; workmanship;...
7Ancient Greekἐνεργήςactive, effective
8Ancient Greekἐνεργόςat work, active
9Ancient Greekἐν-in, within; on
10Ancient Greekἐνin, on, at; among; in, at, or during the time of
11Ancient Greekδέρμαskin, hide
12Ancient Greekγλυφήcarving, carved work; hole cut
13Ancient Greek-ῐ́ᾱ{{l|en|-ia}}; "suffix forming abstract feminine...
14Proto-Indo-European-íh₂
15Proto-Indo-European-h₂Creates collective nouns, which refer to groups...

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
Every word from Proto-Indo-European -h₂
reenergisation — Etymology, Origin & Word History | Etymology Explorer