online \on"line`\, on-line \on"-line`\adj.
   1. 1 (Computers) connected by a communications line to a
      computer. Opposite of off-line.

   Syn: online, on line(predicate).
        [WordNet 1.5]

   2. [prenominal] being in progress now; ongoing; as, on-line
      editorial projects. [Colloq.]

   Syn: in progress(predicate), ongoing, on line(predicate).
        [WordNet 1.5]