climacteric

Climacteric comes from the Greek word klimaktēr, meaning "critical point" or, literally, "rung of a ladder." English speakers have long used climacteric for those inevitable big moments encountered on the metaphorical ladder of life. The major climacterics in a person’s life were once thought to happen in years denoted by multiples of 7 or 9 or only in the odd multiples of 7 (7, 21, 35, etc.). The grand (or great) climacteric was held to occur in the 63rd (7 x 9) or the 81st (9 x 9) year of life. Today, climacteric can refer to male or female menopause, which typically occurs between the ages of 45 and 55, but the general "turning point" sense is not usually tied to a specific age.