incidentallya linking word meaning 'by the way; as a minor or less important point'The study focused on urban pollution; incidentally, it also uncovered high noise levels in the area.NoteThe study focused on urban pollution; incidentally, it also uncovered high noise levels in the area.Elon.io is an online learning platformWe have an entire course teaching IELTS Vocabulary — Band 7+ grammar and vocabulary.Start learning IELTS Vocabulary — Band 7+ now