WordossiaMeaningthat is to say / or ratherPart of speechconjunctionPronunciationCourseItalianLessonExplanatory discourse markers (cioè, infatti, ossia)Usages of ossiaDovete mettere la maschera, ossia quella per l'ossigeno.You must put on the mask, that is to say the oxygen one.Il personale, ossia l'equipaggio, prepara l'atterraggio.The personnel, that is to say the crew, is preparing the landing.