- eccentric
- late 14c. as a term in Ptolemaic astronomy, from M.L. eccentricus, from Gk. ekkentros "out of the center" (as opposed to concentric), from ek "out" + kentron "center" (see center). Figurative sense of "odd, whimsical" (adj.) first recorded 1680s. Noun meaning person with such qualities first attested 1832.