coextensive
Definition
- Adjective:
- Being of equal extent or scope or duration: Describes two or more things that share exactly the same boundaries, cover the same area, or last for the same length of time. They are congruent in their range or limits.
Usage and Examples
- Adjective:
- The city's administrative boundaries are coextensive with the county's. (The city and the county cover the exact same geographical area.)
- In this model, the lifespan of the project is coextensive with the funding period. (The project's duration is exactly equal to the duration of its funding.)
- For many citizens, their personal identity is coextensive with their national identity. (The scope of their personal identity is the same as the scope of their national identity.)
Advanced Usage
- Philosophical/Logical Context: Often used to describe concepts or categories that are logically equivalent or have identical applications.
- In his theory, the set of "rational animals" is coextensive with the set of "humans". (The two terms apply to exactly the same group of entities.)
Variants and Related Words
- Coextensively (adverb): In a coextensive manner.
- The two jurisdictions operate coextensively.
- Coextensiveness (noun): The state or quality of being coextensive.
Synonyms
- Coterminous: Having the same boundaries or limits.
- Conterminous: Sharing a common boundary; coextensive in space, time, or meaning.
- Congruent: In agreement or harmony; in geometry, identical in form and size.
Notes on Meaning
- The term is precise and often used in formal, academic, legal, or technical contexts (e.g., geography, law, philosophy, project management).
- It implies a one-to-one correspondence in spatial, temporal, or conceptual scope.
Adjective
-
being of equal extent or scope or duration
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