From Longman Dictionary of Contemporary Englishmultivitaminmul‧ti‧vit‧a‧min /ˈmʌltɪˌvɪtəmən, -ˌvaɪ- $ -ˌvaɪ-/ noun [countable] a pill or liquid containing many different vitamins
Examples from the Corpus
multivitamin• That finding alone could have enormous impact on the booming multivitamin industry, according to nutrition experts.• They should eat a balanced diet supplemented with multivitamin tablets, avoid alcohol and get plenty of sleep. 