definition of
demonstrate

[1] #1 demonstrate v. [show, demo, exhibit, present] give an exhibition of to an interested audience; "She shows her dogs frequently"; "We will demo the new software in Washington". wn

[2] #2 demonstrate v. [prove, establish, show, shew] establish the validity of something, as by an example, explanation or experiment; "The experiment demonstrated the instability of the compound"; "The mathematician showed the validity of the conjecture". wn

[3] #3 demonstrate v. [attest, certify, manifest, evidence] provide evidence for; stand as proof of; show by one's behavior, attitude, or external attributes; "His high fever attested to his illness"; "The buildings in Rome manifest a high level of architectural sophistication"; "This decision demonstrates his sen. wn

[4] #4 demonstrate v. [march] march in protest; take part in a demonstration; "Thousands demonstrated against globalization during the meeting of the most powerful economic nations in Seattle". wn