replicator: n. Any construct that acts to produce copies of
itself; this could be a living organism, an idea (see meme), a
program (see quine, worm, wabbit, fork bomb, and virus), a
pattern in a cellular automaton (see life, sense 1), or
(speculatively) a robot or nanobot. It is even claimed by some
that Unix and C are the symbiotic halves of an extremely
successful replicator; see Unix conspiracy.