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isth·mus
 isthmus
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- pronunciation:
- Is
m
 s
| part of speech: |
noun |
| inflections: |
isthmi, isthmuses |
| definition: |
a narrow strip of land that joins two larger pieces of land. An isthmus has water on its long sides.
There is an isthmus between North and South America. |
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| derivation: |
isthmoid (adj.) |
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