reversal

re·ver·sal (r-vûrsl)

n.

1. A change to an opposite condition, direction, or position.

2. A condition in which an individual has difficulty distinguishing the lowercase printed or written characters of particular letters: p from q; g or b from d; or s from z.

3. The change of an emotion into its opposite, as from love into hate.

---

reversal

a turning or change in the opposite direction.

---

reversal band

band separating the osteoid seam in developing bone from the remaining osteoid tissue.

reversal line

basophilic cement lines in bone that are wavy rather than smooth and are an indication that the previous cellular activity at the site was resorptive. See also resting line.