#1 demonstration n. [presentation, presentment] a show or display; the act of presenting something to sight or view; "the presentation of new data"; "he gave the customer a demonstration". wn
#2 demonstration n. a show of military force or preparedness; "he confused the enemy with feints and demonstrations". wn
#3 demonstration n. [manifestation] a public display of group feelings (usually of a political nature); "there were violent demonstrations against the war". wn
#4 demonstration n. [monstrance] proof by a process of argument or a series of proposition proving an asserted conclusion. wn
#5 demonstration n. [demo] a visual presentation showing how something works; "the lecture was accompanied by dramatic demonstrations"; "the lecturer shot off a pistol as a demonstration of the startle response". wn
vizzz