coeternity: meaning, definition, pronunciation and examples

Very Low (Specialised/Rare)
UK/ˌkəʊ.ɪˈtɜː.nə.ti/US/ˌkoʊ.ɪˈtɝː.nə.t̬i/

Formal, Literary, Theological

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Quick answer

What does “coeternity” mean?

The state or quality of being eternal together.

Audio

Pronunciation

Definition

Meaning and Definition

The state or quality of being eternal together; existing for an equal, infinite duration.

In theology and philosophy, the shared, simultaneous eternity of two or more entities, most commonly applied to the relationship between members of the Trinity.

Dialectal Variation

British vs American Usage

Differences

No significant spelling or definition differences. Usage is equally rare and specialised in both varieties.

Connotations

Identical; carries strong theological/philosophical connotations.

Frequency

Extremely rare in both dialects, found almost exclusively in theological, metaphysical, or high literary texts.

Grammar

How to Use “coeternity” in a Sentence

the coeternity of [X] and [Y]exist in coeternity with [X]argue for the coeternity of [X]

Vocabulary

Collocations

strong
divine coeternitytrinitarian coeternitydoctrine of coeternity
medium
assert the coeternityspeak of their coeternityconcept of coeternity
weak
eternal coeternityperfect coeternityabsolute coeternity

Examples

Examples of “coeternity” in a Sentence

adjective

British English

  • The coeternal nature of the divine persons is a core doctrine.
  • They are considered coeternal and consubstantial.

American English

  • The theological debate centred on whether the Son was coeternal with the Father.
  • A belief in a coeternal triad.

Usage

Meaning in Context

Business

Not used.

Academic

Used in theological, philosophical, or historical theology papers discussing divine attributes or the Trinity.

Everyday

Virtually never used.

Technical

A precise term in systematic theology and certain metaphysical frameworks.

Vocabulary

Synonyms of “coeternity”

Strong

coeval eternity

Neutral

shared eternityconcurrent eternity

Weak

simultaneous existencemutual perpetuity

Vocabulary

Antonyms of “coeternity”

Watch out

Common Mistakes When Using “coeternity”

  • Misspelling as 'co-eternety' or 'coeternaty'.
  • Using it as a synonym for simple 'eternity', omitting the crucial mutual aspect.
  • Incorrect pronunciation stressing the first syllable (KO-e-ter-ni-ty) instead of the third (ko-e-TER-ni-ty).

FAQ

Frequently Asked Questions

No, it is an extremely rare and specialised term used almost exclusively in theological, philosophical, or high literary contexts.

'Eternity' refers to infinite duration. 'Coeternity' specifically refers to two or more entities sharing that infinite duration equally and simultaneously.

It can be used poetically or philosophically (e.g., 'the coeternity of love and loss'), but such usage is very uncommon. Its primary domain remains theology.

The correct adjective is 'coeternal'. For example, 'the coeternal beings'.

The state or quality of being eternal together.

Coeternity is usually formal, literary, theological in register.

Coeternity: in British English it is pronounced /ˌkəʊ.ɪˈtɜː.nə.ti/, and in American English it is pronounced /ˌkoʊ.ɪˈtɝː.nə.t̬i/. Tap the audio buttons above to hear it.

Learning

Memory Aids

Mnemonic

Think of 'CO-ETERNITY' as 'CO-workers in ETERNITY' – existing forever together, side-by-side.

Conceptual Metaphor

ETERNITY IS A SHARED SPACE / ETERNAL BEINGS ARE CO-EQUAL INHABITANTS OF TIME.

Practice

Quiz

Fill in the gap
The central dogma of the Nicene Council was the of the Son with the Father.
Multiple Choice

In which field is the term 'coeternity' MOST precisely used?

Practise

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Five interactive tools to remember words, train your ear, and build vocabulary in real context — drawn from this dictionary.

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