isthmoid
/ˈɪsmɔɪd/
adjective
- Shaped like or resembling an isthmus; narrow and connecting two larger parts.
- Geologists described the land bridge as isthmoid in form.
- The isthmoid passage between the two valleys was barely wide enough for a single car.
- The isthmoid shape of the sandbar connected the island to the mainland at low tide.
Synonyms