theoretically

adverb

the·​o·​ret·​i·​cal·​ly ˌthē-ə-ˈre-ti-k(ə-)lē How to pronounce theoretically (audio)
ˌthir-ˈe-ti-
1
: according to an ideal or assumed set of facts or principles : in theory
2
: in a theoretical way

Examples of theoretically in a Sentence

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.
Each ball contained about 1/50th of a gram of radioactive isotopes, enough to register on handheld detectors but (theoretically) not enough to be harmful. Christopher McFadden, Interesting Engineering, 28 Oct. 2025 Still, the proof would come experimentally and observationally, not theoretically. Big Think, 28 Oct. 2025 Just like sales taxes, the ultimate burden of tariffs can theoretically be paid by the consumers or the foreign manufacturer. Matt Fleming, Oc Register, 26 Oct. 2025 Enforcing compliance, Cogan adds, is something that Washington theoretically has the ability and credibility to provide. Chad De Guzman, Time, 24 Oct. 2025 See All Example Sentences for theoretically

Word History

First Known Use

circa 1626, in the meaning defined at sense 2

Time Traveler
The first known use of theoretically was circa 1626

Browse Nearby Words

Cite this Entry

“Theoretically.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/theoretically. Accessed 31 Oct. 2025.

More from Merriam-Webster on theoretically

Last Updated: - Updated example sentences
Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!