aluminum
noun
alu·mi·num
ə-ˈlü-mə-nəm 
: a silver-white metallic chemical element with atomic number 13 that has good electrical and thermal conductivity, high reflectivity, and resistance to oxidation
—often used before another noun
aluminum foil
The sweet spot, the point in a bat where vibration supposedly is least, is said to be two times larger on an aluminum bat than on a wood one.—
Hank Hersch
Hank HerschBefore he evacuated, Mr. Gonzales tied the boat down with four gigantic ropes and all the storm could do was knock it off the construction blocks. He slowly climbs a battered aluminum ladder propped up on the port side.—Ken Wells
see Chemical Elements Table
Ken WellsExamples of aluminum in a Sentence
Recent Examples on the Web
Specific products also face tariffs, like a 25% duty on aluminum, steel and automobiles.
—Greg Iacurci, CNBC, 25 Apr. 2025
In 2018, during Trump’s first term, the E.U. imposed a 25 percent tariff on American whiskey in response to his tariffs on imports of steel and aluminum.
—Jonah Flicker, Robb Report, 25 Apr. 2025
Advances in materials—such as the use of lightweight aluminum conductors—are helping to make FPVs more efficient, scalable and cost-effective.
—Robert Lane, Forbes.com, 24 Apr. 2025
The Threat of Trump's Tariffs The Trump administration has imposed a 25 percent tariff on all cars imported to the U.S. and certain car parts, as well as a 25 percent tariff on all imports of steel and aluminum.
—Thomas G. Moukawsher, MSNBC Newsweek, 24 Apr. 2025
See All Example Sentences for aluminum
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.
Greg Iacurci, CNBC, 25 Apr. 2025
In 2018, during Trump’s first term, the E.U. imposed a 25 percent tariff on American whiskey in response to his tariffs on imports of steel and aluminum.
—Jonah Flicker, Robb Report, 25 Apr. 2025
Advances in materials—such as the use of lightweight aluminum conductors—are helping to make FPVs more efficient, scalable and cost-effective.
—Robert Lane, Forbes.com, 24 Apr. 2025
The Threat of Trump's Tariffs The Trump administration has imposed a 25 percent tariff on all cars imported to the U.S. and certain car parts, as well as a 25 percent tariff on all imports of steel and aluminum.
—Thomas G. Moukawsher, MSNBC Newsweek, 24 Apr. 2025
See All Example Sentences for aluminum
Cite this Entry
“Aluminum.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/aluminum. Accessed 30 Apr. 2025.
Copy CitationKids Definition
aluminum
noun
alu·mi·num
ə-ˈlü-mə-nəm
: a silver-white malleable light element that conducts electricity and heat well, is highly resistant to oxidation, and is the most abundant metal in the earth's crust see element
Medical Definition
aluminum
noun
alu·mi·num
ə-ˈlü-mə-nəm
: a silver-white malleable ductile light trivalent metallic chemical element with atomic number 13 that has good electrical and thermal conductivity, high reflectivity, and resistance to oxidation
—symbol Al
see Chemical Elements Table
Love words? Need even more definitions?
Merriam-Webster unabridged
Share