Where does “semi-infinite” come from?

semi-infinite (English) comes from English infinite, from Middle English infinite, from Old French infinité, from Latin infinitas, from Latin īn-, from Latin în, from Latin en, from Proto-Italic en — in.

semi-infinite (English): Involving a finite number of variables but an infinite number of constraints, or vice versa

Definitions

  1. Involving a finite number of variables but an infinite number of constraints, or vice versa

Ancestry of “semi-infinite”, step by step

semi-infinite traces back through two separate lines of ancestry.

via English infinite

StepLanguageWordMeaning
1EnglishinfiniteIndefinably large, countlessly great; immense;...
2Middle Englishinfinite
3Old Frenchinfinité
4Latininfinitasaccusative feminine plural of īnfīnītus;...
5Latinīn-un-, non-, not
6Latinînin, at, on, upon, from (space)
7Latinenlookǃ beholdǃ; reallyǃ?; come onǃ
8Proto-Italicenin
9Proto-Indo-Europeanh₁énin

via English semi

StepLanguageWordMeaning
1EnglishsemiA semi-detached house; A semitrailer; a...
2Englishsemi-half; partial, incomplete; somewhat, rather,...
3Latinsēmi-half
4Proto-Indo-Europeansēmihalf; partially
Every word from Proto-Indo-European h₁én