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canonical

/kəˈnɒnɪkəl/

Conforming to an accepted rule or standard

From Greek via Latin and French canon (Rule).

adjective
noun
canon
Ancient Greek
AI-inferred
κανών (kanṓn)
A straight rod; a rule or standard
Latin
Verified
canōn
Taken into Latin as a rule, decree, or measuring line

from Medieval Latin canonicalis

+1 more source
Old French
Verified
canon
A church rule or ecclesiastical decree

from Medieval Latin canonicalis

+1 more source
Middle English
AI-inferred
canoun
Church law; rule; authoritative scripture
-ical
Latin
AI-inferred
-ālis / -icus
Adjective-forming endings used to mean 'pertaining to' and 'belonging to'
Medieval Latin
Verified
-icālis
Expanded learned adjective ending in ecclesiastical and scholarly Latin

from Medieval Latin canonicalis

+1 more source
Middle English
Verified
-ical
Borrowed adjective suffix forming words like clerical and musical

from Medieval Latin canonicalis

+1 more source
Combined
canon + -ical
A learned adjective built from 'canon' plus an adjective-forming suffix
Middle English
Verified
canonycal
Early form meaning 'according to church rule'

from Middle English canonycal

Early Modern English
Verified
canonical
Generalized to mean standard, orthodox, or accepted as authoritative

from Medieval Latin canonicalis

+1 more source
Modern English
canonical

A canon was originally just a straight rod — the sort of thing a builder or surveyor would actually hold in his hand. The Greeks called that rod κανών (kanṓn), and then Latin clerics turned it into a metaphor for Church law: the rule you measure everything else against. By the early 1400s, English had canoun, and monks were using it for approved Scripture; by the 1500s, the word had escaped the cloister and started meaning any accepted standard, from doctrine to art to mathematics. That’s why canonical sits in the same family as canonize and canon, while sounding like it ought to be related to cannon — which it isn’t, even though the spelling looks like a medieval prank. The whole thing is basically a measuring stick that wandered into theology and never left.

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