Operational (adjective)

1. In operation or in use.
2. Functioning as intended.
3. Related to the operation of something.

Origin:

The word "operational" comes from the latin word "operativus" which means "to work" or "to do something". it was first used in english in the early 1700s.

Examples:

1. The factory is now fully operational and producing goods at full capacity.
2. The new computer system is still in the testing phase, but it is expected to be operational by the end of the month.
3. The aircraft is not operational and will not be available for flights until it is repaired.
4. The system is operational but it is not performing as well as expected.
5. The new policy is intended to make the company more operational efficient.