adoral Syllabification: (ad·o·ral)Pronunciation: /aˈdôrəl/Definition of adoral adjective Zoology relating to or denoting the side or end where the mouth is situated, especially in animals, such as echinoderms, that lack clear upper and lower sides. Derivatives adorally adverb Origin: late 19th century: from ad- 'at' + oraladoral in other Oxford dictionaries Definition of adoral in the British & World English dictionary