tinfoil

noun

tin·​foil ˈtin-ˌfȯi(-ə)l How to pronounce tinfoil (audio)
: a paper-thin metal sheeting usually of aluminum or tin-lead alloy

Examples of tinfoil in a Sentence

Wrap the leftover food in tinfoil.
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.
If breast is getting too dark toward the end of cooking, place a piece of tinfoil over top to shield it. Christine Rousselle, Fox News, 25 Nov. 2024 The Risk Of Bacteria Growth The Centers for Disease Control (CDC) warns that the presence of air can help potentially dangerous bacteria such as staphylococcus (staph) and Bacillus cereus, which can thrive in the conditions created by tinfoil storage, grow faster. Meghan Overdeep, Southern Living, 23 Nov. 2024 Don your tinfoil hat and get ready to entertain a fascinating, if speculative, scenario. Dave Birnbaum, Forbes, 21 Nov. 2024 When Ben turns up to a meeting in a tinfoil hat and fedora (is the tinfoil hat or the fedora more outrageous? Maggie Fremont, Vulture, 18 July 2024 See all Example Sentences for tinfoil 

Word History

First Known Use

14th century, in the meaning defined above

Time Traveler
The first known use of tinfoil was in the 14th century

Dictionary Entries Near tinfoil

Cite this Entry

“Tinfoil.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/tinfoil. Accessed 18 Dec. 2024.

Kids Definition

tinfoil

noun
tin·​foil ˈtin-ˌfȯil How to pronounce tinfoil (audio)
: a thin metal sheeting usually of aluminum or an alloy of tin and lead

More from Merriam-Webster on tinfoil

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!