What is the meaning of Extent?

A range of values or locations.

The space, area, volume, etc., to which something extends.

A contiguous area of storage in a file system.

The valuation of property.

A writ directing the sheriff to seize the property of a debtor, for the recovery of debts of record due to the Crown.

Extended.

third-person plural present active subjunctive of extō

Source: wiktionary.org