Stanford Encyclopedia of Philosophy | Metaphysics Research Lab, Stanford University | Published : 2017
Two-dimensional (2D) semantics is a formal framework that is used to characterize the meaning of certain linguistic expressions and the entailment relations among sentences containing them. The 2D framework has also been applied to thought contents. This entry explains the 2D formalism and the philosophical theses the formalism has been used to support. The 2017 revisions to the entry involve significant new material (about 6,000 words) reflecting current debates over the philosophical applications of the 2D framework.