1. an area of land under the jurisdiction of a ruler or state
2. an area defended by an animal or group of animals against others of the same species
Usage: biology
3. an area of knowledge, activity, or experience

Examples

• The army invaded enemy territory.
• Wolves mark their territory with scent.
• Marketing is not my territory of expertise.
• The Northwest Territory was organized in 1787.
• Birds will defend their territory during mating season.
• This restaurant operates in competitor territory now.
• The disputed territory has been fought over for decades.