To occupy exactly the same space. The two squares coincide nicely. To occur at the same time. The conference will coincide with his vacation. To correspond, concur, or agree. Our ideas coincide, except in certain areas. Etymology: coincido, Latin. 1. To fall upon the same point; to meet in the same point. More @Wikipedia
Hover over any link to get a description of the article. Please note that search keywords are sometimes hidden within the full article and don't appear in the description or title.