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.
Beyond making buildings more comfortable, air conditioning has supported industrial processes, laboratories, hospitals, and data centers where temperature and humidity control matter. — Kaif Shaikh, Interesting Engineering, 25 Oct. 2026 Conversations with my replacement confirmed that local physicians were frustrated with Theranos over these shortcomings and communicating with our laboratory about them. — Torie Bosch, STAT, 24 Oct. 2026 After the two-week STS-120 flight, Harmony was moved from a temporary berth at the Unity module to the forward port on the NASA's main Destiny laboratory. — Tariq Malik, Space.com, 23 Oct. 2026 Customers can use Spiber’s technology to improve microbial protein yields, develop manufacturing processes or produce materials at volumes ranging from laboratory batches to commercial fermentation runs. — Alexandra Harrell, Footwear News, 23 Oct. 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 27 Oct. 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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