still life

Noun

still life (plural still lifes or still lives)

1. (painting) A work of art depicting an arrangement of inanimate objects.

   Synonyms:

   nature morte

2. (countable, usually) A pattern that does not change from one generation to the next.
   • I think you're talking about a configuration known as "eater," a still life in 6-8 cells. If the glider hits the right spot, the eater will form a bridge and destroy the glider while undergoing little change before reverting.1992 May 5, Holocaust-->Travesty, “the Hodge Podge machine”, in comp.theory.cell-automata (Usenet)
   • Thus, a natural question, apparently proposed very early, was whether there exists a still life (i.e. period 1 oscillator) that reflects a glider.1996 November 16, Paul Callahan, “Still-life glider reflector found”, in comp.theory.cell-automata (Usenet)