"disinfectant" in the noun sense
1. disinfectant, germicide, antimicrobic, antimicrobial
an agent (as heat or radiation or a chemical) that destroys microorganisms that might carry disease
"disinfectant" in the adjective sense
1. bactericidal, disinfectant, germicidal
preventing infection by inhibiting the growth or action of microorganisms
Source: WordNet® (An amazing lexical database of English)
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