[def-uh-nish-uh
n] 
| 1. | the act of defining or making definite, distinct, or clear. |
| 2. | the formal statement of the meaning or significance of a word, phrase, etc. |
| 3. | the condition of being definite, distinct, or clearly outlined. |
| 4. | Optics. sharpness of the image formed by an optical system. |
| 5. | Radio and Television. the accuracy of sound or picture reproduction. |