Of or relating to a cosmological theory proposing that the known universe originated in the collision of two other three-dimensional universes traveling in a hidden fourth dimension. This scenario does not require a singularity at the moment of the Big Bang.
Origin of ekpyroticGreek ekpurōsis conflagration, cyclically recurring conflagration in which the universe is destroyed and reborn according to Stoic philosophy ( from ex, ek out of ; see eghs in Indo-European roots.) ( pūr, pur- fire ; see paəw&rlowring; in Indo-European roots.) ( -ōsis n. suff. ) -otic