Pronunciation: (klī-mak'tur-ik, klī"mak-ter'ik),[key] —n. 1. Physiol.a period of decrease of reproductive capacity in men and women, culminating, in women, in the menopause.
2. any critical period.
3. a year in which important changes in health, fortune, etc., are held by some theories to occur, as one's sixty-third year (grand climacteric). 4. the period of maximum respiration in a fruit, during which it becomes fully ripened.