unsaturated chemical-vaporsterilization

un·sat·u·ra·ted chem·i·cal-va·porster·il·iz·a·tion

(ŭn-sachŭr-ā-tĕd kemi-kăl vāpŏr steri-lī-zāshŭn)
Method of disinfection using vapor of a chemical solution in a closed, pressurized chamber.