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
There are roughly 300 metal shredders in North America, creating about 11 billion pounds of mixed aluminum, according to Sortera.
—Diana Olick, CNBC, 17 Jan. 2025
The car caught fire, burning so hot its aluminum wheels melted.
—Alex Wigglesworth, Los Angeles Times, 17 Jan. 2025
The chemical makeup of ring around the collar is different from stains on the underarms of shirts, which are caused by a combination of sweat and the aluminum found in many deodorant and antiperspirant formulas.
—Jolie Kerr, Better Homes & Gardens, 17 Jan. 2025
Maybe Professor Russo would explain why there needs to be mercury or aluminum in any vaccines?
—Reader Commentary, Baltimore Sun, 16 Jan. 2025
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Diana Olick, CNBC, 17 Jan. 2025
The car caught fire, burning so hot its aluminum wheels melted.
—Alex Wigglesworth, Los Angeles Times, 17 Jan. 2025
The chemical makeup of ring around the collar is different from stains on the underarms of shirts, which are caused by a combination of sweat and the aluminum found in many deodorant and antiperspirant formulas.
—Jolie Kerr, Better Homes & Gardens, 17 Jan. 2025
Maybe Professor Russo would explain why there needs to be mercury or aluminum in any vaccines?
—Reader Commentary, Baltimore Sun, 16 Jan. 2025
See all Example Sentences for aluminum
Articles Related to aluminum
Dictionary Entries Near aluminum
Cite this Entry
“Aluminum.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/aluminum. Accessed 27 Jan. 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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