θ理論しーたりろんMeanings1nountheta-theorylinguisticsTechnical term in generative grammar; a module of Government and Binding theory dealing with thematic roles.θ理り論ろんは、動どう詞しが項こうに与あたえる意い味み役やく割わりを扱あつかう。Theta-theory deals with the semantic roles that verbs assign to their arguments.