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
The Chula Vista Police Department is spending nearly $1 million to add 10 electric vehicles to its fleet, believed to be the first law enforcement agency in the region to embrace zero-emission patrol cars.
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Karen Kucher, San Diego Union-Tribune, 26 Nov. 2025
Konechne was among the first law enforcement officers to arrive.
—Robb Murray, Twin Cities, 7 Nov. 2025
The principle of relativity would later show up in Newton’s work as his first law of motion, where an object at rest would remain at rest and an object in motion would remain in constant motion, and would do so forever, unless and until either of them was acted upon by an outside (net) force.
—Big Think, 5 Nov. 2025
California made history Wednesday by enacting the first law in the United States to define and ultimately ban unhealthy ultraprocessed foods, or UPFs, from meals served to over one billion California schoolchildren annually.
—Sandee Lamotte, CNN Money, 8 Oct. 2025
See All Example Sentences for first law
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Karen Kucher, San Diego Union-Tribune, 26 Nov. 2025
Konechne was among the first law enforcement officers to arrive.
—Robb Murray, Twin Cities, 7 Nov. 2025
The principle of relativity would later show up in Newton’s work as his first law of motion, where an object at rest would remain at rest and an object in motion would remain in constant motion, and would do so forever, unless and until either of them was acted upon by an outside (net) force.
—Big Think, 5 Nov. 2025
California made history Wednesday by enacting the first law in the United States to define and ultimately ban unhealthy ultraprocessed foods, or UPFs, from meals served to over one billion California schoolchildren annually.
—Sandee Lamotte, CNN Money, 8 Oct. 2025
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 5 Dec. 2025.
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