Ada
1 Americannoun
noun
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a city in central Oklahoma.
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Douay Bible. Adah.
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a first name: from a Germanic word meaning “noble.”
abbreviation
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American Dental Association. null A.D.A.
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American Diabetes Association. null A.D.A.
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Americans for Democratic Action. null A.D.A.
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Americans with Disabilities Act: a federal law prohibiting discrimination against people with physical or mental impairments and guaranteeing access to employment opportunities and access to state and local government programs and services, signed by President George H. W. Bush in 1990.
abbreviation
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American Dental Association.
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American Diabetes Association.
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Americans for Democratic Action.
noun
Etymology
Origin of Ada
Named after Augusta Ada (Byron), Countess of Lovelace (1815–37), English mathematician, who assisted Charles Babbage in developing a precursor of the modern computer
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.
Despite reportedly running 400,000 simulations a day based on Clinton’s race against Donald Trump, and churning out detailed reports on how to reach voters, Ada and the former secretary of state’s campaign were ultimately unsuccessful.
From Salon • Apr. 13, 2026
A secret tunnel in the Surrey Hills linked to prominent 19th Century mathematician Ada Lovelace is to reopen after lying hidden for five decades.
From BBC • Mar. 17, 2026
Among them are people like Ada Hernandez, who owned a 1950s home on Mountain View Street with her husband, Miguel, where they lived with their 5-year-old son, Mason, 2-year-old Sadie and 14-year-old dog Bentley.
From Los Angeles Times • Jan. 7, 2026
Lawrence while Aunt Ada Doom injects a Gothic touch with her half-mad stare and ravings about “something nasty in the woodshed.”
From The Wall Street Journal • Dec. 12, 2025
“Why do I need ... ,” I began as I turned around to see Ada Taylor standing before me, a green wooden counter and a thick awkwardness between us.
From "Where Things Come Back" by John Corey Whaley
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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.