coextensive

C2 Topic:Describing Qualities

Also spelled co-extensive

US /ˌkoʊ.ɛkˈstɛn.sɪv/ UK /ˌkəʊ.ɪkˈstɛn.sɪv/ See IPA manual

Freq #830774

Meanings

1

adj
Having the same spatial limits or boundaries; sharing the same area.

The city and county of San Francisco are coextensive.
2

adj
Occurring over the same period of time; contemporaneous.

His life is almost co-extensive with one of the most disastrous periods in Roman history.
3

adj
Having the same extension—the object or set of objects to which a term refers.

Coextensive expressions with different intensions cannot in general be substituted for one another within an expression e while preserving the extension of e (assuming that the extension of a declarative sentence is its truth value).
4

adj
being of equal extent or scope or duration

Thesaurus

Synonyms

4 adj · being of equal extent or... conterminouscoterminous

Word family

Derived forms coextensivelycoextensiveness

Related forms coextensioncoterminous extensive

Etymology

From co- + extensive.

Topics

Describing Qualities Word Formation & Derivatives

External links

# coextensive

**Type:** Word
**Level:** C2
**Part of speech:** adj
**IPA (US):** /ˌkoʊ.ɛkˈstɛn.sɪv/
**IPA (UK):** /ˌkəʊ.ɪkˈstɛn.sɪv/
**Frequency rank:** 830774

## Meanings
1. Having the same spatial limits or boundaries; sharing the same area.
2. Occurring over the same period of time; contemporaneous.
3. Having the same extension—the object or set of objects to which a term refers.
4. being of equal extent or scope or duration

## Examples
- The city and county of San Francisco are coextensive.
- His life is almost co-extensive with one of the most disastrous periods in Roman history.
- Coextensive expressions with different intensions cannot in general be substituted for one another within an expression e while preserving the extension of e (assuming that the extension of a declarative sentence is its truth value).

## Derived Forms
- coextensively
- coextensiveness

## Related Forms
- coextension
- coterminous
- extensive

## Etymology
From co- + extensive.

## Topics
- Describing Qualities
- Word Formation & Derivatives

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