| 1. | having a natural inclination or tendency to something; disposed; liable: to be prone to anger. |
| 2. | having the front or ventral part downward; lying face downward. |
| 3. | lying flat; prostrate. |
| 4. | having a downward direction or slope. |
| 5. | having the palm downward, as the hand. |

prone (prōn)
adj.
Lying with the front or face downward.
Having a tendency; inclined.