Select the term that has an opposite meaning of osteosclerosis.

The answer would be osteomalacia. Osteomalacia is called the weakening of the bones. The causes of this are bone formation or the process for bone building while the term Osteoporosis is the weakening of the bone that has already been formed.

The term that has an opposite meaning of osteoclerosis is:

osteomalacia

Osteomalacia is the softening of the bones that often develops because of lack of Vitamin D that can cause bone pain and muscle weakness. The softening of the bones is caused by impaired bone metabolism primarily due to inadequate levels of available phosphate, calcium, and Vitamin D.