I. per ‧ vert 1 /pəˈvɜːt $ pərˈvɜːrt/ BrE AmE verb [transitive]
[ Date: 1300-1400 ; Language: Old French ; Origin: pervertir , from Latin pervertere , from vertere 'to turn' ]
1 . to change something in an unnatural and often harmful way:
Genetic scientists are often accused of perverting nature.
2 . to influence someone so that they begin to think or behave in an immoral way SYN corrupt :
TV violence perverts the minds of young children.
3 . pervert the course of justice law to deliberately prevent a fair examination of the facts about a crime
II. per ‧ vert 2 /ˈpɜːvɜːt $ ˈpɜːrvɜːrt/ BrE AmE noun [countable]
someone whose sexual behaviour is considered unnatural and unacceptable