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}.