An autoclave is a machine that provides a physical method of sterilization by killing bacteria, viruses, and even spores present in the material put inside of the vessel using steam under pressure.

Autoclave sterilizes the materials by heating them up to a particular temperature for a specific period of time.
The autoclave is also called a steam sterilizer that is commonly used in healthcare facilities and industries for various purposes.
The autoclave is considered a more effective method of sterilization as it is based on moist heat sterilization.