I. noun
or sul·phide ˈsəlˌfīd, -lfə̇d
( -s )
Etymology: International Scientific Vocabulary sulf- + -ide; probably originally formed as German sulfid
1. : a compound of sulfur analogous to an oxide with sulfur in place of oxygen:
a. : a binary compound of sulfur usually with a more electropositive element : a salt of hydrogen sulfide
sulfides of iron
the metallic sulfides except those of the alkali metals are usually insoluble in water and occur in many cases as minerals
— compare disulfide 1, polysulfide
b. : a compound of sulfur with more than one element
many minerals (as tetrahedrite) are double or multiple sulfides
— compare sulfosalt
2. : a compound of sulfur analogous to an ether with sulfur in place of oxygen : an ester of hydrogen sulfide
ethyl sulfide (C 2 H 5 ) 2 S
— called also organic sulfide, thioether ; compare disulfide 2, mustard gas
II. transitive verb
or sulphide “
( -ed/-ing/-s )
: to treat with or convert into a sulfide — compare xanthate