- a narrow strip of land, bordered on both sides by water, connecting two larger bodies of land.
- Anatomy, Zoology. a connecting, usually narrow, part, organ, or passage, especially when joining structures or cavities larger than itself.
- Ichthyology. the narrow fleshy area between the sides of the lower jaw of a fish.
Origin of isthmus
Examples from the Web for isthmus
They were on a peninsula, as it were, while the soldiers were securing the isthmus.The Story of the Malakand Field Force
Sir Winston S. Churchill
I returned stoutly; for I had, of course, sunk the Isthmus of Panama beneath the sea.Green Mansions
W. H. Hudson
This part, like an isthmus, was called "Heaven's Floating Bridge."Japanese Fairy World
William Elliot Griffis
We can get all the women we want, and of our own kind without crossing the Isthmus.Sir Henry Morgan, Buccaneer
Cyrus Townsend Brady
They landed on the mainland, and, crossing the isthmus, made for Panama.Plotting in Pirate Seas
- a narrow strip of land connecting two relatively large land areas
- a narrow band of tissue connecting two larger parts of a structure
- a narrow passage connecting two cavities
Word Origin and History for isthmus
1550s, from Latin isthmus, from Greek isthmos "narrow passage, narrow neck of land," especially that of Corinth, of unknown origin, perhaps from eimi "to go" + suffix -thmo (cf. ithma "a step, movement").
- A constriction or narrow passage connecting two larger parts of an organ or other anatomical structure.
- A narrow strip of land connecting two larger masses of land.
A narrow strip of land that connects two larger bodies of land and has water on both sides.