| einstein | (n) 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), Syn. Albert Einstein |
| einsteinian | (adj) of or relating to Albert Einstein or his theories, Example: the Einsteinian universe |
| einsteinium | (n) a radioactive transuranic element produced by bombarding plutonium with neutrons, Syn. Es, atomic number 99, E |