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: an Egyptian nature goddess and wife and sister of Osiris

Word History

Etymology

Latin Isid-, Isis, from Greek, from Egyptian 'st

First Known Use

14th century, in the meaning defined above

Time Traveler
The first known use of Isis was in the 14th century

Cite this Entry

“Isis.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/Isis. Accessed 3 Dec. 2025.

Geographical Definition

Isis

geographical name

a local name for the upper course of the Thames River, England

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