1. the range, scope, or degree to which something extends
2. the size or area covered by something

Examples

• The extent of the damage was worse than expected.
• To what extent do you agree with this policy?
• The forest covers a vast extent of land.
• We need to determine the full extent of the problem.
• The extent of his knowledge impressed everyone.
• The fire spread over a large extent of the building.
• She was surprised by the extent of public support.