definition of
open up

[1] #1 open up v. cause to open or to become open; "Mary opened the car door". wn

[2] #2 open up v. become available; "an opportunity opened up". wn

[3] #3 open up v. make available; "This opens up new possibilities". wn

[4] #4 open up v. open up an area or prepare a way; "She pioneered a graduate program for women students". wn

[5] #5 open up v. start to operate or function or cause to start operating or functioning; "open a business". wn