We found 2 dictionaries that define the word on-line systems:

General (1 matching dictionary)

1. On-Line Systems: Wikipedia, the Free Encyclopedia

Medicine (1 matching dictionary)

2. online medical dictionary (No longer online)

▸ Words similar to on-line systems ▸ Usage examples for on-line systems ▸ Idioms related to on-line systems ▸ Wikipedia articles (New!) ▸ Words that often appear near on-line systems ▸ Rhymes of on-line systems ▸ Invented words related to on-line systems