Where does “Lagrangean” come from?

Lagrangean (English) comes from English Lagrange, from French La Grange, from French là, from Italian là, from Spanish la, from Portuguese lá, from German a, from German a-Moll — ox; aleph; alef.

Ancestry of “Lagrangean”, step by step

Lagrangean traces back through two separate lines of ancestry.

via English Lagrange

StepLanguageWordMeaning
1EnglishLagrange
2FrenchLa Grange
3Frenchthere; here, present
4Italianthere
5Spanishlafeminine singular definite article; the
6Portuguesethere; used with an adverb phrase to indicate...
7GermanaAlternative form of A; Abbreviation of a-Moll;...
8Germana-MollA-minor
9Hungarianathe; this; that
10Frenchàto; on the, to; at
11Middle Frenchato; towards; third-person singular present...
12Old Frenchato; towards; belonging to
13LatinA
14Etruscan𐌀and, also
15Ancient Greekᾱ̔
16Phoenician𐤀ox; aleph; alef

via English ean

StepLanguageWordMeaning
1EnglisheanTo bring forth young; to yean
2Middle EnglishenenTo give birth; to yean
3Old Englishēanianto give birth (to lambs)
4Proto-West Germanicgaaunōnto lamb, yean
5Proto-Germanicaunōnąto lamb, yean
6Proto-Indo-Europeanh₂egʷnóslamb
7Proto-Indo-Europeanh₂egʷ-
Every word from Phoenician 𐤀