a. [ L. erraticus, fr. errare to wander: cf. F. erratique. See Err. ] 1. Having no certain course; roving about without a fixed destination; wandering; moving; -- hence, applied to the planets as distinguished from the fixed stars. [ 1913 Webster ]
The earth and each erratic world. Blackmore. [ 1913 Webster ]
2. Deviating from a wise of the common course in opinion or conduct; eccentric; strange; queer; as, erratic conduct. [ 1913 Webster ]
3. Irregular; changeable. “Erratic fever.” Harvey. [ 1913 Webster ]
Erratic blocks,
gravel, etc. (Geol.), masses of stone which have been transported from their original resting places by the agency of water, ice, or other causes. --
Erratic phenomena, the phenomena which relate to transported materials on the earth's surface. [ 1913 Webster ]