Adolescence /ˌæd

define /dɪˈfaɪn/ verb [ T ] CLEARLY SHOW
3. to show clearly the edge of something
The outline of the castle on the hill was clearly defined against the evening sky.
demonstrate /ˈdem.ən.streɪt/ verb SHOW
1. [ T ] to show; to make clear
These figures clearly demonstrate the size of the economic problem facing the country.
[ + that ] Research has demonstrated that babies can recognize their mother's voice very soon after birth.
These problems demonstrate the importance of strategic planning.
2. [ T ] to show something and explain how it works
He's got a job demonstrating kitchen equipment in a department store.
[ + question word ] The teacher demonstrated how to use the equipment.