unconsciousness
US /ʌnˈkɑːn.ʃəs.nəs/
UK /ʌnˈkɑːn.ʃəs.nəs/
1.
the state of not being awake and aware of what is happening around you
:
•
He fell into unconsciousness after hitting his head.
•
The patient remained in a state of unconsciousness for several hours.