Where does “labor-intensive” come from?

labor-intensive (English) comes from English intensive, from Middle French intensif, from Medieval Latin intensivus, from Latin intendere, from Latin intendo, from Latin in-, from Latin in, from Old Latin en — in.

labor-intensive (English): Requiring a great deal of work, especially...

Definitions

  1. Requiring a great deal of work, especially...

Ancestry of “labor-intensive”, step by step

labor-intensive traces back through two separate lines of ancestry.

via English intensive

StepLanguageWordMeaning
1EnglishintensiveThorough; to a great degree; with intensity;...
2Middle Frenchintensif
3Medieval Latinintensivusintensive
4Latinintenderethird-person plural perfect active indicative of...
5LatinintendoI stretch out; I strain; I turn my attention to,...
6Latinin-un-, non-, not; in, within, inside
7Latininin, at, on, upon, from; within, while in; into,...
8Old Latinenin
9Proto-Italicenin
10Proto-Indo-Europeanh₁énin

via English labor

StepLanguageWordMeaning
1EnglishlaborEffort expended on a particular task; toil, work;...

Words derived from “labor-intensive

Every word from Proto-Indo-European h₁énEvery word from Proto-Italic enEvery word from Latin in-