A "stationary state" refers to a condition or situation where there is no change, movement, or progress happening. It is characterized by stability, equilibrium, and a lack of development or growth. Full definition
However, this objection not only depends upon the controversial thesis that there really could be an absolutely stationary state, but also upon the assumption that «time can only exist where there is change.» (religion-online.org)
The increase of the surface temperature needed for the new stationary state would be about 1 C higher for doubling of CO2, if there were no feedbacks from added H2O and other feedback mechanisms. (judithcurry.com)
One might object that prior to the physicist's first Planck time, there was an initial absolutely stationary state of the universe or (inclusive disjunction) of God, and that since time can only exist where there is change, time does not exist always, i.e., in case of a stationary state of affairs descriptive of the universe class. (religion-online.org)