[], (Adverb)

Definitions:
- in or into production or operation
(e.g: the first phase of the development came on stream 18 months ago)


Phrases:

Origin:

[], (Adjective)

Definitions:
- performed or occurring as part of production or operation
(e.g: the remaining on-stream production produced 24.8 barrels of oil per day)


Phrases:

Origin: