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
Industrial-grade steel and aluminum, other steel and aluminum semi-finished and finished products, along with their derivative commercial products, such as machinery parts and knitting needles were set to be included.
—Lim Hui Jie,sophie Kiderlin, CNBC, 3 Apr. 2025
Art of the trade deal Trump enacted tariffs on steel and aluminum for most countries during his first administration and used them as a cudgel against Mexico and Canada to negotiate an update to the North American Free Trade Agreement that was more favorable to the United States.
—Zac Anderson, USA Today, 2 Apr. 2025
As a neighbor and critical trading partner, Canada is also expected to be particularly affected by Trump's duties on steel and aluminum and newly announced tariffs on automobile imports.
—Jason D. Greenblatt, MSNBC Newsweek, 2 Apr. 2025
Trump’s new tariff regime will be on top of various tariffs the U.S. already has in place, and ones Trump had already set in motion targeting imports of cars, steel and aluminum.
—Brian Bennett, Time, 2 Apr. 2025
See All Example Sentences for aluminum
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Lim Hui Jie,sophie Kiderlin, CNBC, 3 Apr. 2025
Art of the trade deal Trump enacted tariffs on steel and aluminum for most countries during his first administration and used them as a cudgel against Mexico and Canada to negotiate an update to the North American Free Trade Agreement that was more favorable to the United States.
—Zac Anderson, USA Today, 2 Apr. 2025
As a neighbor and critical trading partner, Canada is also expected to be particularly affected by Trump's duties on steel and aluminum and newly announced tariffs on automobile imports.
—Jason D. Greenblatt, MSNBC Newsweek, 2 Apr. 2025
Trump’s new tariff regime will be on top of various tariffs the U.S. already has in place, and ones Trump had already set in motion targeting imports of cars, steel and aluminum.
—Brian Bennett, Time, 2 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 13 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
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