| 1. | the course of thought or meaning that runs through something written or spoken; purport; drift. |
| 2. | continuous course, progress, or movement. |
| 3. | Rhetoric. the subject of a metaphor, as “she” in “She is a rose.” Compare vehicle (def. 8). |
| 4. | Music.
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| 5. | quality, character, or condition. |
| 6. | Music. of, pertaining to, or having the compass of a tenor. |

ten·or (těn'ər) n.
[Middle English, from Anglo-Norman, from Latin, uninterrupted course, from tenēre, to hold, continue; see ten- in Indo-European roots.] |
Tenor
The term or life of a contract.
Investopedia Commentary
This is similar to maturity.
See also: Maturity