(from climacter, a ladder, graduation), among physicians, a critical year in a person's life. According to some, this is every seventh year; but others admit only the years produced by multiplying 7 by the odd numbers 3, 5, 7, and 9, to be climacterical. These years have been supposed from remote antiquity to bring with them some remarkable vicissitudes with respect to health and fortune. The grand climacteric is the 63rd year; but some, making two, add to this the 81st. The other remarkable climacterics are the 7th, 21st, 35th, and 49th.