user ID
noun/ˌjuːzər ˌaɪ ˈdiː/
/ˌjuːzər ˌaɪ ˈdiː/
(also username)
(computing)- the name you use in order to be able to use a computer program or system
- Please enter your user ID.
Check pronunciation:
user ID
Definition of user ID noun from the Oxford Advanced Learner's Dictionary