adgynorthwyydd

== Welsh == === Etymology === ad- (“affirmative prefix”) +‎ cynorthwyydd (“assistant, helper”). === Pronunciation === (North Wales) IPA(key): /adɡənɔrˈθʊɨ̯.ɨ̞ð/ (South Wales) IPA(key): /adɡənɔrˈθʊi̯.ɪð/ === Noun === adgynorthwyydd m (plural adgynorthwyyddion) (pharmacology, immunology) adjuvant === Further reading === “adgynorthwyydd”, in Y Termiadur Addysg [Education Terminology] (in Welsh), Bangor, Wales: The Language Technologies Unit of the Bedwyr Center of Bangor University, 2023