Reference meaning
on
Last updated
in operation or operational
Other meanings
2. adjective
(of events) planned or scheduled
3. adverb
with a forward motion
4. adverb
indicates continuity or persistence or concentration
Source and scope
This definition is reproduced from Princeton WordNet 3.0, sense 01651196-a, under the WordNet 3.0 License. It has not yet received VocabularyBase editorial review. Read the source and license details.