as in cornerstone
an immaterial thing upon which something else rests
a sense of history is the keystone to the city's draw as a tourist destination
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Example Sentences
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Recent Examples of keystone
These keystone species are expected to play a crucial role in shaping the ecosystem.
—
Real-Time News Team, Miami Herald, 22 Aug. 2025
The vast collection also acts as a keystone for market authentication.
—Mark Littler, Forbes.com, 21 Aug. 2025
At the time it was considered the keystone in Oceanside’s downtown renaissance, part of an effort to bring more people and commercial activity to the area.
—Phil Diehl, San Diego Union-Tribune, 7 Aug. 2025
The viewing rectangle can be scaled down and moved around to fit the available space, without needing to reposition the unit, and focus/keystone are automatically tweaked for easy placement.
—New Atlas, 4 Aug. 2025
See All Example Sentences for keystone
Real-Time News Team, Miami Herald, 22 Aug. 2025
The vast collection also acts as a keystone for market authentication.
—Mark Littler, Forbes.com, 21 Aug. 2025
At the time it was considered the keystone in Oceanside’s downtown renaissance, part of an effort to bring more people and commercial activity to the area.
—Phil Diehl, San Diego Union-Tribune, 7 Aug. 2025
The viewing rectangle can be scaled down and moved around to fit the available space, without needing to reposition the unit, and focus/keystone are automatically tweaked for easy placement.
—New Atlas, 4 Aug. 2025
See All Example Sentences for keystone
Recent Examples of Synonyms for keystone
Noun
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Enterprise software is no longer viewed as a discretionary cost but rather as an operational cornerstone for the digital economy.—
Arthur Mouratov,
Forbes.com,
2 Sep. 2025
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More The History of The Usos The Usos, sons of WWE Hall of Famer Rikishi, have been a cornerstone of WWE's tag team division for over a decade.—
Andrew Ravens,
MSNBC Newsweek,
1 Sep. 2025
Noun
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However, amid the confusion of new strains, changing vaccine guidelines and cuts to vaccine development funding, the CDC continues to track cases, hospitalizations and deaths on a weekly basis.—
Mary Walrath-Holdridge,
USA Today,
9 Sep. 2025
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So is this a call to get your hsCRP levels checked on a regular basis?—
Sarah Garone,
Health,
9 Sep. 2025
Noun
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And with the foundation laid, Flowers is eager for the Golden Bulls to make that next leap.—
Roderick Boone,
Charlotte Observer,
6 Sep. 2025
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The West Virginia man set up a foundation that built two churches in his home state and gave food, clothing and scholarships to local students, according to a 2020 New York Times obituary.—
Phaedra Trethan,
USA Today,
6 Sep. 2025
Noun
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Johnny Unitas was bedrock establishment.—
Seth Wickersham,
The Atlantic,
8 Sep. 2025
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Independence of monetary policy has long been considered sacrosanct—the bedrock of global confidence in the dollar.—
Dan Perry,
MSNBC Newsweek,
8 Sep. 2025
Cite this Entry
“Keystone.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/keystone. Accessed 10 Sep. 2025.
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