Define forenoon . forenoon synonyms, forenoon pronunciation, forenoon translation, English dictionary definition of forenoon . n. The period of time between sunrise and ... Definition of forenoon noun in Oxford Advanced Learner's Dictionary. Meaning , pronunciation, picture, example sentences, grammar, usage notes, synonyms and more. the time period between dawn and noon" Forenoon ." Vocabulary.com Dictionary, Vocabulary.com, https://www.vocabulary.com/dictionary/ forenoon . Accessed 01 Nov. 2025 ... Morning is either the period from sunrise to noon, or the period from midnight to noon. In the first definition it is preceded by the twilight period of dawn, and there are no exact times for when morning begins because it can vary according to one's latitude, and the hours of daylight at each time of year.