Definition of op in US English:

op

noun

informal
  • 1A surgical or other operation.

    • ‘It will separate planned surgery from emergency care so patients do not face cancelled ops at the 11 th hour.’
    • ‘Next month, she will have been off booze and cocaine for three years and ops to rebuild her nose have been a success.’
    • ‘More worrying is that they are encouraged to use national health beds and operating theaters to do private ops the next day.’
    • ‘‘It varies from traumatic amputation landmine injuries, gunshot wounds, motor vehicle accidents or elective cases through to minor ops,’ he said.’
    • ‘Until the double transplant ops, Laura was forced to spend nine hours every day hooked up to a dialysis machine.’
    1. 1.1ops Military operations.

Pronunciation

op

/ɑp//äp/