dietary UK /ˈdaɪət(ə)ɹi/US /ˈdaɪəˌtɛɹi/adjective 2noun 2forms 1 adjective2 •Pertaining to a prescribed diet; (generally), relating to what a person or animal eats.If you have any dietary requirements, please inform the kitchen staff. •Comprising a food source.For example, the antitumour depsipeptide kahalalide F was isolated from the opisthobranch mollusc Elysia rufescens, and is used by both the mollusc and its dietary alga Bryopsis spp. — 2016 noun2 •A regulated diet that excludes or constrains certain types of food, especially for health reasons; also, a book or similar setting out such regulations.[H]er lassitude was such that she hardly cared to feed herself; yet she managed to consume five or six times a normal dietary. — 1917 •A prescribed meal plan setting out how the inhabitants of an institution (such as a prison, hospital etc.) should be fed, and on what foods.“Do I understand that he asked for more, after he had eaten the supper allotted by the dietary?” “He did, sir,” replied Bumble. — 1837 formsdietaries
