Copernican, na.
1. adj. belonger or concerning Nicolaus Copernicus, Polish astronomer of the fifteenth and sixteenth centuries. Copernican system.
2. adj. under the system of Copernicus.
3. adj. supporter of this system. U t. c. s.
4. adj. said of a change of behaviour, a way of thinking, etc.: very marked. I turn Copernican.
