einstein

(noun) physicist born in Germany who formulated the special theory of relativity and the general theory of relativity; Einstein also proposed that light consists of discrete quantized bundles of energy (later called photons) (1879-1955). Synonyms: Einstein, Albert Einstein.

(noun) someone who has exceptional intellectual ability and originality. Synonyms: genius, mastermind, brain, brainiac, Einstein. Examples: "Mozart was a child genius." "He's smart but he's no einstein."