Entry 1 sense Webster, 1913 Methodology /mĕthˌ-əd-äl'-əj-ē/ · Meth·od·ol·o·gy · IPA /ˌmɛθ.əˈdɑ.lə.d͡ʒi/ 01 n. The science of method or arrangement; a treatise on method. 1. The science of method or arrangement; a treatise on method.