English

Alternative forms

• dimethyl sulphoxide

Noun

dimethyl sulfoxide ‎(uncountable) (abbreviation DMSO)

1. (organic chemistry) An organic compound, (CH₃)₂SO, obtained as a byproduct from wood pulp, and is used as a solvent for carrying out chemical reactions and for administering drugs through the skin; also used as a reagent; its polar structure is a resonance hybrid.