Answer: autoclave

AnswerCrossword Clue
AUTOCLAVERelative of a pressure cooker.
AUTOCLAVEKin of a pressure cooker
autoclave(French) a kind of French stewpan with a steamtight lid / to heat in an autoclave
autoclaveA strong, heated container used for chemical reactions and other processes using high pressures and temperatures, e.g., steam sterilization