Noun: isthmus (isthmuses,isthmi) is-mus
- A relatively narrow strip of land (with water on both sides) connecting two larger land areas
"The Panama Canal was built across the Isthmus of Panama"
- A cord-like tissue connecting two larger parts of an anatomical structure
"The isthmus connects the two lobes of the thyroid gland";
- band
Derived forms: isthmi, isthmuses
Type of: dry land, earth, ground, land, solid ground, terra firma, tissue
Encyclopedia: Isthmus