extensive.
Having a great extent; covering a large area; vast.
Meaning & usage
Having a great extent; covering a large area; vast.
Considerable in amount.
I have done extensive research on the subject.
Serving to extend or lengthen; characterized by extension.
Having a combined system entropy that equals the sum of the entropies of the independent systems.
Where this word comes from
Etymology tree Proto-Indo-European *h₁éǵʰ Proto-Indo-European *-s Proto-Indo-European *h₁éǵʰs Proto-Italic *eks Latin ex Latin ex- Proto-Indo-European *ten- Proto-Indo-European *tend- Proto-Indo-European *-eti Proto-Indo-European *téndeti Proto-Italic *tendō Latin tendō Latin extendō Latin extēnsus Proto-Indo-European *-wós Proto-Indo-European *-iHwósder. Latin -īvus Late Latin extensīvusder. Middle English extensive English extensive From late Middle English, borrowed from Late Latin extensīvus, from Latin extensus.
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Definitions, grammatical labels, IPA, etymology and examples: Wiktionary contributors, extracted by Kaikki / Wiktextract. Adapted under CC BY-SA 4.0. Selected fields and authored examples are shown; third-party quotations and audio are omitted. See contributor history.
Last enriched 2026-09-10. Definitions are in English. Romanizations are shown when supplied by the source; syllable estimates are omitted for unsupported scripts.