Where does “letterheaded” come from?

letterheaded (English) comes from English ED, from Japanese エンディング, from English ending, from Middle English ending, from Middle English endyng, from Old English endung, from Old English endian, from Proto-Germanic andijōną — on, onto.

letterheaded (English): Printed with a letterhead

Definitions

  1. Printed with a letterhead

Ancestry of “letterheaded”, step by step

letterheaded traces back through two separate lines of ancestry.

via English ED

StepLanguageWordMeaning
1EnglishEDInitialism of erectile dysfunction; Initialism of...
2Japaneseエンディングending, especially of a broadcast or performance
3EnglishendingA termination or conclusion; The last part of...
4Middle EnglishendingAlternative form of endyng
5Middle EnglishendyngAn ending, termination, or conclusion;...
6Old Englishendungending
7Old Englishendianto end, make an end of; to finish, complete; to...
8Proto-Germanicandijōnąto end, bring to an end, finish
9Proto-Germanicandijazend
10Proto-Indo-Europeanh₂entíosfront; forehead
11Proto-Indo-Europeanh₂ent-face; forehead; front
12Proto-Indo-Europeanh₂en-on, onto

via English letterhead

StepLanguageWordMeaning
1EnglishletterheadA portion of text at the top of a letter,...
2EnglishletterA symbol in an alphabet; A written or printed...
3Middle Englishletter
4Old Frenchletreletter
5Latinlitteraa letter of the alphabet; handwriting; letter,...
6Latinlītera
7Old Latinleitera
8Proto-Indo-Europeanh₂leyH-to smear
9Proto-Indo-Europeanleyh₂-to die, disapear; to avoid, elude, decline,...
Every word from Proto-Indo-European h₂en-