Eccentric is an adjective that means one who deviates or away from the center, or that does not have the same center.
In the figurative sense, eccentric means everything that is extravagant, freak, weird, that is, out of the ordinary. Ex: eccentric behavior, eccentric architecture etc.
The term eccentric qualifies the individual who presents an extravagant behavior, inverse to the order of others and of the environment where he finds himself.
Being eccentric is moving away from the usual, the common. It is committing exaggerations, it is having your own lifestyle, in the way you dress, think and also in the behavioral aspect.
Eccentric is the individual who has his own ways, with characteristics outside the prevailing social standards in the society in which he lives. It is considered to be different from normal standards.
In Mechanics, an eccentric is a piece whose axis of rotation does not occupy the center and is intended to transform a continuous rotational movement into a movement of a different nature.
Eccentricity is a feminine noun that indicates the quality of what is eccentric.
Eccentricity is, in Geometry, the distance from the center of the hyperbola or ellipse in relation to a focus.
See the meaning of Odd.