I. ik-ˈsen-trik, ek- adjective
Etymology: Middle English, from Medieval Latin eccentricus, from Greek ekkentros, from ex out of + kentron center
Date: circa 1630
1.
a. : deviating from an established or usual pattern or style
eccentric products
b. : deviating from conventional or accepted usage or conduct especially in odd or whimsical ways
an eccentric millionaire
2.
a. : deviating from a circular path ; especially : elliptical 1
an eccentric orbit
b. : located elsewhere than at the geometrical center ; also : having the axis or support so located
an eccentric wheel
Synonyms: see strange
• ec·cen·tri·cal·ly -tri-k(ə-)lē adverb
II. noun
Date: 1827
1. : a mechanical device consisting of an eccentric disk communicating its motion to a rod so as to produce reciprocating motion
2. : an eccentric person