Sentence:  After blotting out <WSD>most</WSD> of the saline around the sections , a drop of * * f was layered over each of the sections , allowed to react for 30 minutes , and then washed with PBS for 15 - 30 minutes . 
Meaning of the word marked with <WSD> tags:  the superlative of `much' that can be used with mass nouns and is usually preceded by `the'; a quantifier meaning the greatest in amount or extent or degree