| a graduate nurse who has passed a state board examination and been registered and licensed to practice nursing. Abbreviation: R.N. |
| registered nurse n. Abbr. RN A graduate trained nurse who has passed a state registration examination and has been licensed to practice nursing. |
registered nurse reg·is·tered nurse (rěj'ĭ-stərd)
n.
Abbr. RN, R.N. A nurse who has graduated from an accredited school of nursing and has been registered and licensed to practice by a state authority.