WHEN

I. adverb see: who Date: before 12th century at what time , 2. at or during which time, and then, at a former and usually less prosperous time , II. conjunction Etymology: Middle English, from Old English hwanne, hwenne, from hwanne, hwenne, adverb Date: before 12th century 1. at or during the time that ; while , just at the moment that , at any or every time that , in the event that ; if , 3. considering that , in spite of the fact that ; although , the time or occasion at or in which , III. pronoun Date: 14th century what or which time , IV. noun Date: 1616 the time in which something is done or comes about