The notion of homonymy has been of perennial philosophical interest to scholars of Aristotle from ancient Greek commentators to modern thinkers. Across historical periods, certain issues have remained central, such as the nature of Aristotelian homonymy, its relation to synonymy and analogy, and whether the concept undergoes change throughout the corpus. In addition, fundamental questions concerning the use of homonymy in regard to dialectical practice and scientific inquiry are raised and discussed. It is argued that there are two aspects to (...) Aristotelian homonymy, negative and positive in function, which provide complementary roles in regard to dialectic and science. (shrink)