"suppresser" in the noun sense
1. suppressor, suppresser
someone who suppresses
"dictators are suppressors of free speech"
2. suppressor, suppresser, suppressor gene, suppresser gene
a gene that suppresses the phenotypic expression of another gene (especially of a mutant gene)
3. suppressor, suppresser
an electrical device for suppressing unwanted currents
Source: WordNet® (An amazing lexical database of English)
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