Isthmus Definition

ĭsməs
isthmi, isthmuses
noun
isthmuses
A narrow strip of land having water at each side and connecting two larger bodies of land.
Webster's New World
A narrow strip of tissue connecting two larger parts of an organ.
The isthmus of the thyroid.
Webster's New World
A narrow passage between two larger cavities.
The isthmus of the fallopian tubes.
Webster's New World
Synonyms:

Other Word Forms of Isthmus

Noun

Singular:
isthmus
Plural:
isthmi, isthmuses

Origin of Isthmus

  • Via Latin isthmus, from Ancient Greek ἰσθμός (isthmos, “neck”). Cognate to Old Norse eið (“isthmus”).

    From Wiktionary

  • Latin from Greek isthmos

    From American Heritage Dictionary of the English Language, 5th Edition

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