Definition of open up
transitive verb
1
:to make available or possible
- The discovery opens up the possibility of new cures.
2
:to make plain or visible :disclose
3
:to open by cutting into
intransitive verb
1
:to become available or possible
- The hostess will let us know when a table opens up.
2
:to spread out or come into view
- The road opens up ahead.
3
:to commence firing
4
:to become communicative
- tried to get the patient to open up
