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 final determination and report are pending further laboratory testing, state police said. Nicole Acosta, People.com, 22 July 2025 Through its laboratories, research, and educational outreach, the Institute reinforces a set of standards that both reflect and shape the values of the industry. Jennifer Lee, Forbes.com, 22 July 2025 That facility housed weaving, dyeing, lamination and coating operations, as well as a research, development and testing laboratory. Jennifer Bringle, Sourcing Journal, 21 July 2025 Wen: Diagnosis is made through laboratory testing of blood, sputum and parts of a swollen lymph node. Katia Hetter, CNN Money, 18 July 2025 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 29 Jul. 2025.

Kids Definition

laboratory

noun
lab·​o·​ra·​to·​ry ˈlab-(ə-)rə-ˌtōr-ē How to pronounce laboratory (audio) -ˌtȯr- How to pronounce laboratory (audio)
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

More from Merriam-Webster on laboratory

Last Updated: - Updated example sentences
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