demonstrate

v. t. [ L. demonstratus, p. p. of demonstrare to demonstrate; de- + monstrare to show. See Monster. ] 1. To point out; to show; to exhibit; to make evident. Shak. [ 1913 Webster ]

2. To show, or make evident, by reasoning or proof; to prove by deduction; to establish so as to exclude the possibility of doubt or denial. [ 1913 Webster ]

We can not demonstrate these things so as to show that the contrary often involves a contradiction. Tillotson. [ 1913 Webster ]

3. (Anat.) To exhibit and explain (a dissection or other anatomical preparation). [ 1913 Webster ]