(n) a parenthesis-free notation for forming mathematical expressions in which each operator precedes its operands, Syn. Polish notation, Lukasiewicz notation
The Collaborative International Dictionary of English (GCIDE) v.0.53 Collaborative International Dictionary (GCIDE)
n. [ Skr. ēka one + E. silicon. ] (Chem.) The name of a hypothetical element predicted by Mendeleev and afterwards discovered and named germanium; -- so called because it was a missing analogue of the silicon group. See Germanium, and cf. Ekabor. Also see periodic table. [ 1913 Webster +PJC ]