Meaning of “existing” - Learner’s Dictionary

existing

adjective [ always before noun ] uk us /ɪɡˈzɪstɪŋ/

B2 which exist or are used at the present time:

Existing schools will have to be expanded to accommodate the extra students.
How many existing customers have you got?
→ See also pre-existing

(Definition of “existing” from the Cambridge Learner’s Dictionary © Cambridge University Press)