From Latin , past-participle stem of expandere (“to spread out”; see expand) + -ive.

• IPA: /ɪkˈspænsɪv/

expansive

1. Comprehensive in scope or extent.

   expansive research work

   • 1848 November – 1850 December, William Makepeace Thackeray, chapter 46, in The History of Pendennis. […], volume (please specify |volume=I or II), London: Bradbury and Evans, […], published 1849–1850, →OCLC ↗:

     She laughed, she winked, and nodded knowingly at Pen; she tapped him on the arm with her fan; she tapped Blanche; she tapped the Major;—her contentment was boundless, and her method of showing her joy equally expansive.

2. Talkative and sociable.
3. Able to be expanded.
   • 1691, John Ray, The Wisdom of God Manifested in the Works of the Creation, page 56:

     The Elastick or expansive faculty of the Air, whereby it dilates itself, when compressed (indeed this lower Region of it by reason of the weight of the superincumbent is al∣ways in a compressed State) hath been made use of in the common Weather-glasses, in Wind guns, and in several ingenious Water∣works, and doubtless hath a great Interest in many natural Effects and Operations.

4. (mathematics) Exhibiting expansivity.

• German: umfangreich, umfassend

• German: gesprächig, gesellig, herzlich, beredt, mitteilsam, freundlich
• Portuguese: expansivo
• Spanish: expansivo

• French: expansible
• German: expandierbar (expandable), ausdehnbar, ausdehnungsfähig
• Italian: espansibile, espandibile
• Spanish: expansible

• German: expansiv
• Italian: espansivo