Word Study
sesquisulphide
CIDE DICTIONARY
sesquisulphide, n. [Sesqui- + sulphide.].
A sulphide, analogous to a sesquioxide, containing three atoms of sulphur to two of the other ingredient; -- formerly called also sesquisulphuret ; as, orpiment, As2S3 is arsenic sesquisulphide. [1913 Webster]
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