(Greek: "immolation", from ex, "out of" and pyr, "fire")
In Stoic philosophy, the cosmological concept of the world-engulfing fire, which turns everything into pure flame/energy. In this cosmology, the terminal ekpyrosis also signals the birth of a new world, identical to the old (this being the Stoic concept of eternal recurrence). The pure fire, which is also the deity, forms out of itself the matter of the new world, which is then steered by the deity as spiritual force towards a new ekpyrosis, in a forever recurring cycle of birth, destruction and rebirth.