单词	aluminum
释义	aluminum noun alu·​mi·​num ə-ˈlü-mə-nəm  often attributive : 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 foilThe 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 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 Example Sentences Recent Examples on the Web Concrete, steel and aluminum for new construction are particularly large contributors to carbon emissions. Jeri Frank, Forbes, 4 Aug. 2022 Founded in 1921, O’Neal Steel manufactures carbon and alloy steel, stainless steel and aluminum products and has 18 distribution centers throughout the U.S. William Thornton | Wthornton@al.com, al, 1 Aug. 2022 Available 15-inch ceramic fronts shed 22 pounds, look great and keep the stylish 19-inch cast aluminum wheels squeaky clean. Robert Ross, Robb Report, 1 June 2022 The Stealth Performance package emphasizes sporty looks, with gloss black grille, mirror caps, running boards, red brake calipers and 22-inch black aluminum wheels. Mark Phelan, Detroit Free Press, 26 May 2022 The 20-inch aluminum wheels wear Michelin all-season tires. Caleb Miller, Car and Driver, 10 May 2022 Our tester sat on tarty 20-inch aluminum wheels with spars and center-cap all painted black like goth fingernails. Dan Neil, WSJ, 5 May 2022 On the exterior, replacement siding mimics the original cedar siding and energy-efficient windows framed in aluminum were selected to emulate the midcentury style. oregonlive, 14 Aug. 2022 These Dianthus earrings are crafted in aluminum with 18-karat white gold and embellished with a pair of Belionota sumptuosa beetles — also aptly known as jewel beetles for their vivid colors — and surrounded by cognac diamonds. Laurie Brookins, The Hollywood Reporter, 13 July 2022 See More Word History Etymology New Latin, from alumina First Known Use 1812, in the meaning defined above Phrases Containing aluminum aluminum oxide aluminum sulfate aluminum foil aluminum oxide aluminum sulfate aluminum foil Kids Definition aluminum noun alu·​mi·​num ə-ˈlü-mə-nəm  : 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 aluminum noun alu·​mi·​num ə-ˈlü-mə-nəm  often attributive : 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 Chemical Elements Table
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