* A misspelling of "metronome": A device used to mark time in music by producing regular beats.
* A shortened form of "metropolitan": Relating to a large city.
* A Greek word: "Metron" means "measure" in Greek.
* A brand name: There are various companies and products that use "Metron" in their names.
Without more context, it's difficult to determine the specific meaning of "metron". Please provide more information about where you encountered this word.