first law
noun
: the most important principle
He teaches his students that balance is the first law of architecture.
Examples of first law in a Sentence
Recent Examples on the Web
Utah enacted the first law, last May, supporting plug-in solar, and now some 30 pieces of similar legislation have been introduced around the United States.
—
Jeff Brady, NPR, 12 Mar. 2026
Long Beach passed the first law in the state in June, creating staffing standards for self-checkout lanes in grocery and drug stores.
—Victoria Le, Oc Register, 6 Mar. 2026
Reiter was a central figure in the first law enforcement probe of Epstein in Florida.
—James Hill, ABC News, 9 Feb. 2026
Arguing about snow in subfreezing temperatures can remind you of the first law of thermodynamics—that snow can’t be created or destroyed.
—Naaman Zhou, New Yorker, 3 Feb. 2026
See All Example Sentences for first law
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Jeff Brady, NPR, 12 Mar. 2026
Long Beach passed the first law in the state in June, creating staffing standards for self-checkout lanes in grocery and drug stores.
—Victoria Le, Oc Register, 6 Mar. 2026
Reiter was a central figure in the first law enforcement probe of Epstein in Florida.
—James Hill, ABC News, 9 Feb. 2026
Arguing about snow in subfreezing temperatures can remind you of the first law of thermodynamics—that snow can’t be created or destroyed.
—Naaman Zhou, New Yorker, 3 Feb. 2026
See All Example Sentences for first law
Cite this Entry
“First law.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/first%20law. Accessed 29 Mar. 2026.
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