Entry 1 sense Webster, 1913 Etymological /(-mō̇*lŏj"ĭ*kal)/ · Et·y·mo·log·ic·al · IPA /ˌɛt.ɪ.məˈlɑ.d͡ʒɪ.kəl/ 01 a. Pertaining to etymology, or the derivation of words. 1. Pertaining to etymology, or the derivation of words.