Exhaust

"Exhaust" was Kroton terminology for "death," referring to when individuals would "cease to function" as Krotons couldn't really "die." Without sufficient mental energy from high brains, even their Dynatrope ships would exhaust.

As the Kroton Commander (PROSE: The Krotons) explained to Jamie McCrimmon:

"We function permanently, unless we exhaust. The exhaust procedure is merely a reversion to basic molecules, but the matter can be re-animated."

- Kroton Commander

When the Kroton battle fleet came under attack from enemy fire, two crew members of one Dynatrope were exhausted, forcing the ship to land on the nearby Gond planet. (TV: The Krotons)

When the war with the Metatraxi began, it took over four thousand Krotons to lift the First Lattice into orbit of their homeworld Krosi-Aspai-Core, exhausting them in the process. (PROSE: Alien Bodies)