Acidiphilium is a genus in the phylum Proteobacteria (Bacteria).
The name Acidiphilium derives from:
New Latin noun acidum (from Latin adjective acidus, sour), an acid; New Latin neuter gender adjective philum (from Greek neuter gender adjective philon (φίλον)), friend, loving; New Latin neuter gender noun Acidiphilium (sic), acid lover.
The genus contains 6 species (including basonyms and synonyms), namely
A. acidophilum ( (Harrison 1983) Hiraishi et al. 1998, ; New Latin noun acidum (from Latin adjective acidus, sour), an acid; New Latin neuter gender adjective philum (from Greek neuter gender adjective philon (φίλον)), friend, loving; New Latin neuter gender adjective acidophilum, acid loving.), this species used to known as Thiobacillus acidophilusA. angustum ( Wichlacz et al. 1986, ; Latin neuter gender adj, angustum, narrow, small, with respect to nutritional versatility.)A. cryptum ( Harrison 1981, (Type species of the genus).; New Latin neuter gender adjective cryptum (from Greek noun adjective krupton), hidden.)A. multivorum ( Wakao et al. 1995, ; Latin adjective multus, many; Latin v. voro, to eat, devour; New Latin neuter gender adjective multivorum, devouring many kinds of substances.)A. organovorum ( Lobos et al. 1986, ; New Latin pref. organo- (from Greek adjective organikos, of or pertaining to an organ), pertaining to organic chemical compounds; Latin v. voro, to eat, devour; New Latin neuter gender adjective organovorum, devouring organic compounds.)A. rubrum ( Wichlacz et al. 1986, ; Latin adjective ruber -bra -brum, red; Latin neuter gender adjective rubrum, red colored.)Acidocella aminolytica and Acidocella facilis used to be in this genus.