Where does “headcanon” come from?

headcanon (English) comes from English canon, from Middle English canoun, from Old French canon, from Italian cannone, from Italian canna, from Latin canna, from Ancient Greek κάννα, from Akkadian 𒄀 — reed; a certain unit of length.

headcanon (English): Elements and interpretations of a fictional...

Definitions

  1. Elements and interpretations of a fictional...

Ancestry of “headcanon”, step by step

headcanon traces back through two separate lines of ancestry.

via English canon

StepLanguageWordMeaning
1EnglishcanonA generally accepted principle; a rule; A group...
2Middle EnglishcanounEcclesiastical regulations; canon law
3Old Frenchcanontube; cannon
4Italiancannonecannon; ace; large tube or pipe
5Italiancannacane; barrel; rod
6LatincannaA reed, cane; Anything made of reed or cane;...
7Ancient Greekκάνναgiant reed; reed mat
8Akkadian𒄀reed; a certain unit of length
9Sumerian𒄀reed; a certain unit of length

via English head

StepLanguageWordMeaning
1EnglishheadThe part of the body of an animal or human which...
2English-yAdded to nouns and adjectives to form adjectives...
3Middle English-yDesignates an adjective, in many cases formed by...
4Old English-iġ-y, -ic
5Proto-West Germanic-gForms adjectives from nouns and verbs with a...
6Proto-Germanic-gaz-y
7Proto-Indo-European-ḱos-y, -ic
Every word from Sumerian 𒄀Every word from Akkadian 𒄀Every word from Ancient Greek κάννα