Sentence:  On the other hand , there are a few antithyroid drugs of this same general type , such as resorcinol , possessing no <WSD>reducing</WSD> activity and possibly acting through formation of a complex with molecular iodine . 
Meaning of the word marked with <WSD> tags:  any process in which electrons are added to an atom or ion (as by removing oxygen or adding hydrogen); always occurs accompanied by oxidation of the reducing agent