suppressor gene vs suppresser gene

suppressor gene and suppresser gene both are nouns.

Word	Noun	Adjective	Verb	Adverb
suppressor gene	Yes	No	No	No
suppresser gene	Yes	No	No	No

As nouns, suppressor gene and suppresser gene are synonyms defined as:

suppressor gene and suppresser gene: a gene that suppresses the phenotypic expression of another gene (especially of a mutant gene)

Other synonyms of suppressor gene include suppresser, suppressor.

suppressor gene (noun)	suppresser gene (noun)
a gene that suppresses the phenotypic expression of another gene (especially of a mutant gene)	a gene that suppresses the phenotypic expression of another gene (especially of a mutant gene)