- (
mathematics )数学 a function or a symbol such as + or × 函子 - (also function word)(
grammar )语法 a word that is important to the grammar of a sentence rather than its meaning, for example ‘do’ in ‘we do not live here’ 功能词,虚词(如 we do not live here 中的 do 一词)
Word Origin1930s: from function, on the pattern of words such as factor.