keystone
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 fest is a keystone event for Sandbox on the Beach, Santa Monica’s new civic plan for public events like the upcoming Super Bowl LXI and the LA28 Olympics and Paralympics.
From Los Angeles Times ● Jul. 16, 2026
Southern red wood ants are considered a keystone species, meaning they play an important role in supporting healthy ecosystems.
From BBC ● Jun. 28, 2026
She pointed to the 1967 Outer Space Treaty, a keystone document on international space law that President Lyndon Johnson signed onto.
From Salon ● Apr. 9, 2026
Last year, some 1,000 U.S. troops withdrew from neighboring Niger, ending a nearly decadelong partnership that was the keystone of U.S. counterterrorism operations in the region.
From The Wall Street Journal ● Nov. 2, 2025
Finally the keystone was lowered into place to lock the ribs together at the crown, the highest point of the arch.
From "Cathedral: The Story of Its Construction" by David Macaulay
Vocabulary lists containing keystone
