| 1. | not determinate; not precisely fixed in extent; indefinite; uncertain. |
| 2. | not clear; vague. |
| 3. | not established. |
| 4. | not settled or decided. |
| 5. | Mathematics.
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| 6. | Botany. (of an inflorescence) having the axis or axes not ending in a flower or bud, thus allowing further elongation. |
| 7. | Mathematics. something whose value is not specified: used esp. in abstract algebra; a variable. |