Sentence:  The set of <WSD>all</WSD> binomial distributions is called the family of binomial distributions , but in general discussions this expression is often shortened to `` the binomial distribution '' , or even `` the binomial '' when the context is clear . 
Meaning of the word marked with <WSD> tags:  quantifier; used with either mass or count nouns to indicate the whole number or amount of or every one of a class