n]
| 1. | the arranging of music for instruments, esp. for an orchestra. |
| 2. | the list of instruments for which a composition is scored. |
| 3. | the use of, or work done by, instruments. |
| 4. | instrumental agency; instrumentality. |
| 5. | the science of developing, manufacturing, and utilizing instruments, esp. those used in science and industry. |