noun. an abnormal backward curve to the vertebral column.
1. Noun, singular or mass At the other end of spectrum from kyphosis is lordosis, which is an excessive inward curve of the lower back. 2. Verb, base form Women, in particular, are vulnerable to kyphosis, or the dreaded hunchback, while doing behind-the-neck presses when their torso is weak, showed the 2015 study.