We found 9 dictionaries that define the word RISC OS:

General (2 matching dictionaries)

1. RISC-OS, RISC OS: Dictionary.com
2. RISC OS: Wikipedia, the Free Encyclopedia

Computing (5 matching dictionaries)

3. RISC OS: Free On-line Dictionary of Computing
4. RISC OS: CCI Computer
5. RISC OS: Game Dictionary
6. RISC OS, RISC OS: Encyclopedia

Medicine (1 matching dictionary)

7. online medical dictionary (No longer online)

Miscellaneous (1 matching dictionary)

8. RISC-OS: Acronym Finder

Definitions from Wikipedia (RISC OS) ▸ noun:  an operating system designed to run on ARM computers. ▸ Words similar to RISC OS ▸ Usage examples for RISC OS ▸ Idioms related to RISC OS ▸ Wikipedia articles (New!) ▸ Words that often appear near RISC OS ▸ Rhymes of RISC OS ▸ Invented words related to RISC OS