nonfreeze
/ˈnɑnˌfriːz/Definitions
1. verb
to prevent from freezing; to keep from freezing or becoming frozen
“The farmer decided to nonfreeze the pipes by wrapping them in insulation.”
2. noun
an instruction to a satellite or other spacecraft not to enter a frozen state in the event of a system failure
“The spacecraft was programmed with a nonfreeze procedure to ensure it could continue to transmit data even in extreme temperatures.”