uranium

n : a heavy toxic silvery-white radioactive metallic element;

occurs in many isotopes; used for nuclear fuels and

nuclear weapons [syn: {U}, {atomic number 92}]

Uranus

Hideyuki Nakashima , 1993. A logic-based

knowledge representation language. An extension of Prolog

written in Common Lisp, with Lisp-like syntax. Extends Prolog

with a multiple world mechanism, plus term descriptions to

provide functional programming.

{(ftp://etlport.etl.go.jp/pub/uranus/ftp)}