Any of the family Chlorobiaceae of obligately anaerobic photoautotrophic bacteria.

plural of iron-sulfur protein

plural of sulfur-bottom whale

(chemistry) A thermochemical cycle, used to produce hydrogen, consisting of three chemical reactions whose net reactant is water and whose net products are hydrogen and oxygen.

Any bacteria of the class Chloroflexi that photosynthesize, but do not produce oxygen.

Alternative spelling of sulphurwort

Alternative spelling of sulphuretum

Containing or yielding sulfur.

Having a colour similar to that of sulfur. / Having a smell similar to that of sulfur compounds.

(chemistry) the divalent radical and functional group SO₂=