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 switch marked a full-circle moment in Contra Costa County, which is home to one of the first law enforcement agencies in the state to shield its communications from the public.
—
Jakob Rodgers, Mercury News, 10 Oct. 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
According to Fox 2, the first 911 call came in at 10:25 a.m. from a caller describing being shot in the stomach, and the first law enforcement officer arrived at 10:27 a.m.
—Adam Sabes, FOXNews.com, 3 Oct. 2025
North Kansas City police officer Brandon Keeton was the first law enforcement personnel on the scene, and rendered aid to Vasquez as law enforcement quickly flooded the scene at Clay Street and East 21st Avenue.
—Pj Green, Kansas City Star, 30 Sep. 2025
See All Example Sentences for first law
Examples are automatically compiled from online sources to
show current usage.
Read More
Opinions expressed in the examples do not represent those of Merriam-Webster or its editors.
Send us feedback.
Jakob Rodgers, Mercury News, 10 Oct. 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
According to Fox 2, the first 911 call came in at 10:25 a.m. from a caller describing being shot in the stomach, and the first law enforcement officer arrived at 10:27 a.m.
—Adam Sabes, FOXNews.com, 3 Oct. 2025
North Kansas City police officer Brandon Keeton was the first law enforcement personnel on the scene, and rendered aid to Vasquez as law enforcement quickly flooded the scene at Clay Street and East 21st Avenue.
—Pj Green, Kansas City Star, 30 Sep. 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 28 Oct. 2025.
Copy CitationLove words? Need even more definitions?
Merriam-Webster unabridged
Share