Define osteoporosis.

• A. condition of excessive bone growth
• B. condition of abnormal bone curvature
• C. condition of low bone density
• D. condition of increased joint fluid

Answer: (C)

Verified step by step guidance

1. Identify the root word and suffix in the term 'osteoporosis'. The root 'osteo-' refers to 'bone', and the suffix '-porosis' relates to 'porous' or 'condition of pores'.
2. Understand that 'osteoporosis' describes a condition involving the bones, specifically related to their density or structure.
3. Recall that 'porosis' implies a state of being porous or having holes, which in medical terms often means decreased density or weakening.
4. Combine the meanings to interpret 'osteoporosis' as a condition where bones become porous or less dense, leading to fragility.
5. Conclude that among the given options, 'condition of low bone density' correctly defines osteoporosis.