Definition of Eccentric

Adjective: eccentric ik'sen-trik or ek'sen-trik

Conspicuously or grossly unconventional or unusual
"famed for his eccentric spelling";
- bizarre, freakish, freaky, flaky, flakey, gonzo [N. Amer], off-the-wall, outlandish, outrÃ©
Not having a common centre; not concentric
"eccentric circles";
- nonconcentric

Noun: eccentric ik'sen-trik or ek'sen-trik

A person with an unusual or odd personality
- eccentric person, flake [N. Amer], oddball, geek, dag [Austral, NZ]
A person of a specified kind (usually with many eccentricities)
"a friendly eccentric";
- character, type, case