aluminum

noun

alu·​mi·​num ə-ˈlü-mə-nəm How to pronounce aluminum (audio)
: 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
Before 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

Examples of aluminum 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.
Plus, the new Jet Black aluminum case paired with a sleek black sport band gives it a refined, sporty look. Juhi Wadia, PCMAG, 12 Nov. 2024 The company continues to invest in its aluminum operations segment, with capital expenditures totaling $1,414,831,000 for the first nine months of 2024. Quartz Bot, Quartz, 8 Nov. 2024 Paired with a strong aluminum or steel pole structure, the heavy canvas fabric creates a resilient structure that can withstand weather in a way that the flexible poles and thin fabrics of backpacking tents could never achieve. Wes Siler, Outside Online, 6 Nov. 2024 Vintage aluminum sconces sit next to a work by Guy de Rougemont in a chrome frame that sets it off beautifully. Nicolas Milon, Architectural Digest, 5 Nov. 2024 See all Example Sentences for aluminum 

Word History

Etymology

alumine "alumina" (borrowed from French, borrowed from Latin alūmin-, alūmen alum entry 1) + -um (in the names of other metals, as platinum entry 1, tantalum)

First Known Use

1812, in the meaning defined above

Time Traveler
The first known use of aluminum was in 1812

Dictionary Entries Near aluminum

Cite this Entry

“Aluminum.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/aluminum. Accessed 26 Nov. 2024.

Kids Definition

aluminum

noun
alu·​mi·​num ə-ˈlü-mə-nəm How to pronounce aluminum (audio)
: 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 How to pronounce aluminum (audio)
: 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

More from Merriam-Webster on aluminum

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