isthmus

noun isth·mus \ ˈi-sməs \
Updated on: 14 Nov 2017

Definition of isthmus

1 : a narrow strip of land connecting two larger land areas
2 : a narrow anatomical part or passage connecting two larger structures or cavities

Recent Examples of isthmus from the Web

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'isthmus.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

Origin and Etymology of isthmus

Latin, from Greek isthmos


ISTHMUS Defined for English Language Learners

isthmus

noun

Definition of isthmus for English Language Learners

  • : a narrow area of land that connects two larger land areas


ISTHMUS Defined for Kids

isthmus

noun isth·mus \ ˈi-sməs \

Definition of isthmus for Students

: a narrow strip of land separating two bodies of water and connecting two larger areas of land

Medical Dictionary

isthmus

noun isth·mus \ ˈis-məs \

medical Definition of isthmus

: a contracted anatomical part or passage connecting two larger structures or cavities: as
a : an embryonic constriction separating the midbrain from the hindbrain
b : the lower portion of the uterine corpus


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