online meaning and definition

ONLINE adjective

Definition of online (adjective)

1. on a regular route of a railroad or bus or airline system
   • "on-line industries"
   • synonyms: on-line
   • antonym: off-line
2. connected to a computer network or accessible by computer
   • "an on-line database"
   • synonyms: on-line
   • antonym: off-line
3. being in progress now
   • "on-line editorial projects"
   • synonyms: on-line