eu·​geo·​syn·​cline (ˌ)yü-ˌjē-ō-ˈsin-ˌklīn How to pronounce eugeosyncline (audio)
: a narrow rapidly subsiding geosyncline usually with volcanic materials mingled with clastic sediments
eugeosynclinal adjective

Word History

First Known Use

1942, in the meaning defined above

Time Traveler
The first known use of eugeosyncline was in 1942

Dictionary Entries Near eugeosyncline

Cite this Entry

“Eugeosyncline.” Dictionary, Merriam-Webster, Accessed 20 Jul. 2024.

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