Variant of isthmus
- a narrow strip of land having water at each side and connecting two larger bodies of land
- a narrow strip of tissue connecting two larger parts of an organ: the isthmus of the thyroid
- a narrow passage between two larger cavities: the isthmus of the fallopian tubes
Origin: L from Glassical Greek isthmos, a neck, narrow passage, isthmus
Used by arrangement with John Wiley & Sons, Inc.