laboratory

noun

lab·​o·​ra·​to·​ry ˈla-b(ə-)rə-ˌtȯr-ē How to pronounce laboratory (audio)
sometimes ˈla-bər-ˌtȯr-
or ˈla-bə-ˌtȯr-
or lə-ˈbȯr-ə-ˌtȯr-
plural laboratories
often attributive
1
a
: a place equipped for experimental study in a science or for testing and analysis
a research laboratory
broadly : a place providing opportunity for experimentation, observation, or practice in a field of study
b
: a place like a laboratory for testing, experimentation, or practice
That area is a laboratory for cultivating the germ of terrorism.
2
: an academic period set aside for laboratory work
a course of study requiring two lectures and one laboratory per week

Examples of laboratory in a Sentence

experiments conducted in a modern laboratory
Recent Examples on the Web
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.
The young woman, Heather Owens, and three male technicians were added to the quarters’ growing population Tuesday night after they were exposed to lunar material in another part of the lunar receiving laboratory. Aj Willingham, AJC.com, 6 Aug. 2026 Unlike traditional laboratory-scale systems, the Evergreen-05 fits inside a five-liter enclosure roughly the size of a shoebox. Aamir Khollam, Interesting Engineering, 6 Aug. 2026 The agency is also aware of at least 12,255 additional cases that have not yet been laboratory confirmed or require further investigation and analysis. Youri Benadjaoud, ABC News, 6 Aug. 2026 One of the sources of the bacteria was an under-construction public health laboratory overseen by Skanska USA, which is listed as a defendant in Crump’s lawsuits. Leonard Greene, New York Daily News, 6 Aug. 2026 See All Example Sentences for laboratory

Word History

Etymology

Medieval Latin laboratorium, from Latin laborare to labor, from labor

First Known Use

1592, in the meaning defined at sense 1a

Time Traveler
The first known use of laboratory was in 1592

Browse Nearby Words

Cite this Entry

“Laboratory.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/laboratory. Accessed 7 Aug. 2026.

Kids Definition

plural laboratories
: a place equipped for making scientific experiments and tests

Medical Definition

laboratory

noun
lab·​o·​ra·​to·​ry
ˈlab-(ə-)rə-ˌtōr-ē, -ˌtȯr-, British usually lə-ˈbär-ə-t(ə-)rē
plural laboratories
often attributive
: a place equipped for experimental study in a science or for testing and analysis

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