Definition of aluminum
: a bluish silver-white malleable ductile light trivalent metallic element that has good electrical and thermal conductivity, high reflectivity, and resistance to oxidation and is the most abundant metal in the earth's crust where it always occurs in combination — see element table
Recent Examples of aluminum from the Web
The new S7 has the same scratch-resistant Gorilla Glass front and back with aluminum frame, this time with a curved and flatter back.
The siding on the Grenfell Tower, called Reynobond PE, had an aluminum exterior but was plastic on the inside, which may act as an accelerant at high temperatures.
Ford invested $1.3 billion and has hired 2,000 new employees at KTP since mid-2015 to support the conversion of its Super Duty pickup to an aluminum body and bed.
All products in this story meet Allure’s natural standards: no parabens, petroleum, mineral oil, phthalates, aluminum, talc, sodium laurel sulfate, triclosan, formaldehyde, toluene, or chemical sunscreens.
The void space between the aluminum panels and building fabric can create a chimney effect, allowing fire to rapidly move up the side of a structure.
In 1985 the league decided to switch from aluminum bats—which college teams use—to wooden ones, as in major league baseball.
Gary Marchalk was lying face down in a bedroom surrounded by blood and with an aluminum baseball bat at his feet.
National security via tariffs: Meltzer said that he was concerned that the Trump administration might cite national security as a justification for raising tariffs on steel and aluminum.
These example sentences are selected automatically from various online news sources to reflect current usage of the word 'aluminum'. Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.
Origin and Etymology of aluminum
New Latin, from alumina
First Known Use: 1810See Words from the same year
ALUMINUM Defined for English Language Learners
Definition of aluminum for English Language Learners
: a silver metal that is strong and light and that is used for making many products
ALUMINUM Defined for Kids
Definition of aluminum for Students
: a silver-white light metallic chemical element that is easily worked, conducts electricity well, resists weathering, and is the most plentiful metal in the earth's crust
Medical Definition of aluminum
: a bluish silver-white malleable ductile light trivalent metallic element that has good electrical and thermal conductivity, high reflectivity, and resistance to oxidation and is the most abundant metal in the earth's crust where it always occurs in combination—symbol Al; see element table
Seen and Heard
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