English
endergonic
From end- + -ergonic.
Proto-Indo-European *h₂ent- ‘face, forehead, front’
…
Proto-Germanic *andijaz ‘end’
Proto-West Germanic *andī ‘end’
Old English ende ‘end’
Middle English ende ‘end’
English end
Today it means
adj Describing a reaction that absorbs (heat) energy from its environment
Language periods are conventional ranges, not dates for this word.
Etymograph / endergonic