Where does “preanesthesia” come from?

preanesthesia (English) comes from English anesthesia, from English anæsthesia, from English an-, from Latin ad-, from Latin īn-, from Latin în, from Latin en, from Proto-Italic en — in.

Ancestry of “preanesthesia”, step by step

preanesthesia traces back through two separate lines of ancestry.

via English anesthesia

StepLanguageWordMeaning
1EnglishanesthesiaAn artificial method of preventing sensation,...
2Englishanæsthesia
3Englishan-Alternative form of on-; not; used to make words...
4Latinad-to; usually prefixed to verbs, in which cases it...
5Latinīn-un-, non-, not
6Latinînin, at, on, upon, from (space)
7Latinenlookǃ beholdǃ; reallyǃ?; come onǃ
8Proto-Italicenin
9Proto-Indo-Europeanh₁énin

via English pre

StepLanguageWordMeaning
1EnglishpreBefore; Precum, Cowper's fluid, pre-ejaculate; To...
2Latinpraebefore; in front; in front of
3Proto-Italicpraibefore; in front of
4Proto-Indo-Europeanpreh₂-before, in front
5Proto-Indo-Europeanper-before, in front; first; to go through
6Proto-Indo-Europeanpr̥tóspassed , crossed
Every word from Proto-Indo-European h₁énEvery word from Latin īn-Every word from Latin ad-