Definition of "demonstrate"

demonstrate

/ˈdɛmənstɹeɪt/

verb
third-person singular simple present demonstrates, present participle demonstrating, simple past and past participle demonstrated
1. (transitive) to show how to use (something).
  Quotations
  In this tape, a velvet-voiced narrator provides a stroke-by-stroke guide to massaging your partner. As she speaks, comely nude couples demonstrate.
  1987 February 8, Richard Zachs, “Candy is dandy (though maybe not liquor) - so for this Valentine's Day, video may be a whole lot more fun”, in The New York Daily News
2. to show the steps taken to create a logical argument or equation.
3. (intransitive) to participate in or organize a demonstration.
4. (transitive) to show, display, or present; to prove or make evident
  Quotations
  The debate was not long on policy, as questions about the Affordable Care Act and the war in Syria demonstrated.
  2016, David A. Graham, “Donald Trump's Disastrous Debate”, in The Atlantic, page http://www.theatlantic.com/liveblogs/2016/10/second-presidential-debate-clinton-trump/503495/
  "What we are trying to demonstrate is that freight lines at lower speeds can be electrified much more cheaply. […] "
  2023 March 22, Paul Clifton, “CILT report urges £50m infill electrification schemes”, in RAIL, number 979, page 8