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 development follows successful laboratory validation in 2025, when the partners demonstrated automotive-scale FEST cells delivering an energy density of 375 Wh/kg. Jijo Malayil, Interesting Engineering, 30 July 2026 The nation that can move most rapidly from laboratory benches to patients will attract scientific talent, investment capital, and manufacturing capacity while establishing the standards that others follow. David Shulkin, STAT, 29 July 2026 There’s no new scientific information supporting that the virus might instead have leaked from a laboratory, a theory Paul champions. Lauran Neergaard, Los Angeles Times, 29 July 2026 There’s no new scientific evidence supporting the theory that the virus might instead have leaked from a laboratory, a theory Paul champions. Lauran Neergaard, Fortune, 29 July 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 1 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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