What is the geographical term for a narrow strip of land connecting two larger land areas?

These crucial land bridges play a major role in both human history and natural history by connecting two larger landmasses while separating two major bodies of water. The correct geographical term for such a feature is an isthmus. The word itself comes from the ancient Greek "isthmos," which translates to "neck." This is a fitting description, as an isthmus often looks like a thin neck of land connecting a mainland "body" to a peninsular "head" or joining two continental "bodies" together.

Throughout history, isthmuses have been incredibly important strategic locations. The Isthmus of Panama, for example, links North and South America, while the Isthmus of Suez connects Africa and Asia. These formations act as natural corridors for the migration of plants and animals, but they also serve as major obstacles to maritime travel. This is why two of the world's most famous canals, the Panama Canal and the Suez Canal, were built directly across them to create vital shortcuts for global shipping.

An easy way to remember the term is to think of its opposite: a strait. While an isthmus is a narrow strip of land separating two waters, a strait (like the Strait of Gibraltar) is a narrow strip of water separating two landmasses. Both have defined global trade and exploration for centuries.