Where does “Einstein's constant” come from?

Einstein's constant (English) comes from English ’s, from English Kingstown, from English town, from Middle English toun, from Middle English ende, from Old English ende, from Proto-Germanic andi, from Proto-Indo-European h₂énti — on, onto.

Einstein's constant (English): Any of several mathematical constants associated with Albert Einstein's work

Definitions

  1. Any of several mathematical constants associated with Albert Einstein's work

Ancestry of “Einstein's constant”, step by step

Einstein's constant traces back through 3 separate lines of ancestry.

via English ’s

StepLanguageWordMeaning
1English’s—
2EnglishKingstownOS grid ref NY3959
3EnglishtownA settlement; an area with residential districts,...
4Middle Englishtountown
5Middle EnglishendeThe end or finishing of a thing; the terminal...
6Old Englishendeend, limit, border, corner
7Proto-Germanicandiin addition, furthermore, and
8Proto-Indo-Europeanh₂éntiopposite; near; in front
9Proto-Indo-Europeanh₂éntsforehead; front
10Proto-Indo-Europeanh₂ent-face; forehead; front
11Proto-Indo-Europeanh₂en-on, onto

via English einstein

StepLanguageWordMeaning
1EnglisheinsteinOne mole of photons, regardless of frequency, as...
2GermanEinsteinan extremely intelligent person
3Germansteinstone, rock
4Middle High Germansteinstone
5Old High Germansteinstone
6Proto-West Germanicstainstone
7Proto-Germanicstainazstone
8Proto-Indo-Europeansteyh₂-to stiffen
9Proto-Indo-Europeansteh₂-to stand

via English constant

StepLanguageWordMeaning
1EnglishconstantUnchanged through time or space; permanent;...
2Middle Englishconstant—
3Old Frenchconstant—
4Latincōnstantem—
Every word from Proto-Indo-European h₂en- →