Sinai
Americannoun
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Also called Sinai Peninsula. a peninsula in northeastern Egypt, at the northern end of the Red Sea between the Gulfs of Suez and Aqaba. 230 miles (370 km) long.
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Mount Sinai, the mountain, in southern Sinai, of uncertain identity, on which Moses received the law. Exodus 19.
noun
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a mountainous peninsula of NE Egypt at the N end of the Red Sea, between the Gulf of Suez and the Gulf of Aqaba: occupied by Israel in 1967; fully restored by 1982
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the mountain where Moses received the Law from God (Exodus 19–20): often identified as Jebel Musa, sometimes as Jebel Serbal, both on the S Sinai Peninsula
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In the Bible (see also Bible), Moses received the Ten Commandments on Mount Sinai.
Sinai has been the scene of fighting during the Arab-Israeli conflict. Israel conquered and occupied Sinai in the Six-Day War but returned the region to Egypt in 1982.
Other Word Forms
Etymology
Origin of Sinai
From Late Latin Sinai, from Greek Siná, from Hebrew Sīnaī, of uncertain origin and meaning
Example Sentences
Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.
The Mount Sinai team also plans to investigate AHR-blocking drugs and gene-therapy approaches that reduce AHR activity specifically in neurons.
From Science Daily ● Aug. 29, 2026
Schwab said there are multiple services nearly every day at Mount Sinai and nearby Forest Lawn, which see hundreds of thousands of visitors a year.
From Los Angeles Times ● Aug. 21, 2026
Veerle Bergink, a professor of psychiatry and the director of the Mount Sinai Women's Mental Health Center, is among the people working diligently to get postpartum psychosis included in the DSM-5.
From BBC ● Aug. 19, 2026
Like Sinai, its chatbot draws only on the actual text of the book -- no outside information.
From Barron's ● Jul. 27, 2026
“I think I know Mrs. Haines. She joined us around a month ago. Lives about three blocks from here and goes to Mount Sinai Church, yes?”
From "Betty Before X" by Ilyasah Shabazz and Renée Watson
Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023
Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.
