1. inconsistent: not predictable, regular, or consistent, especially in being likely to depart from expected standards at any time His driving tends to be rather erratic.
2. often changing direction: often changing direction and not following any definite course
3. geology carried and deposited by ice: describes a rock or boulder that was carried from its source by ice and deposited when the ice melted
noun (pluraler·rat·ics)
Definition:
geology rock moved by ice: a rock or boulder that was carried from its source by ice and deposited when the ice melted
[14th century. < Old French erratique< Latin errare "to wander"]
