An example of an isthmus is a land bridge.
The isthmus of the thyroid.
The isthmus of the fallopian tubes.
Other Word Forms
Origin of isthmus
- Latin from Greek isthmos
From American Heritage Dictionary of the English Language, 5th Edition
- Via Latin isthmus, from Ancient Greek ἰσθμός (isthmos, “neck”). Cognate to Old Norse eið (“isthmus”).