Here are some possible interpretations:
1. "-ion" suffix: You might be thinking of the common English suffix "-ion", which typically indicates a process, state, or action. Examples include:
* Education: The process of educating.
* Creation: The act of creating.
* Conclusion: The final part of something.
2. "Lon" as part of a larger word:
* "Long" is a common word meaning extended in space or time.
* "London" is the capital city of England.
* "Silicon" is a chemical element.
3. "-lon" in scientific terminology:
* "Megaton" is a unit of explosive power.
* "Kiloton" is also a unit of explosive power.
4. "Lon" as a misspelling:
You may be thinking of a word that has been misspelled with "-lon" instead of another similar suffix like "-ion" or "-son".
To get a more accurate answer, please provide the full word or context in which you encountered "-lon".