Abstract

Descriptions are predicates. Here, I'll take this to mean either of two basically equivalent things: that they have extensions as their semantic values, sets of entities, in the broadest sense; or that they have type-〈e,t〉 functions as their semantic values, functions from entities, in the broadest sense, to truth values. An entity in the broadest sense is anything that can be the subject of a first-order predication. Examples are individuals, pluralities, masses, and kinds. Here I'm including entities in this broadest sense because my thesis that descriptions are predicates applies to all sorts of descriptions: singular descriptions, plural definite descriptions, mass descriptions, kind descriptions, and indefinite descriptions as well.