Quantcast
Merriam-Webster Logo
  • Dictionary
  • Thesaurus
  • Medical
  • Scrabble
  • Spanish Central
  • Learner's Dictionary

aluminum

play
noun alu·mi·num \ə-ˈlü-mə-nəm\

Simple Definition of aluminum

  • : a silver metal that is strong and light and that is used for making many products

Full Definition of aluminum

  1. :  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

Origin of aluminum

New Latin, from alumina


First Known Use: 1810

Other Chemical Engineering Terms



ALUMINUM Defined for Kids

aluminum

play
noun alu·mi·num \ə-ˈlü-mə-nəm\

Definition of aluminum

  1. :  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 Dictionary

aluminum

play
noun alu·mi·num \ə-ˈlü-mə-nəm\

Medical Definition of aluminum

  1. :  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

What made you want to look up aluminum? Please tell us where you read or heard it (including the quote, if possible).

WORD OF THE DAY

February 10, 2016

to put in good humor

Get Word of the Day daily email!

WORD GAMES

Take a 3-minute break and test your skills!

image1037863653

Which of the following refers to thin, bending ice, or to the act of running over such ice?

kittly-benders spindrift pince-nez duvet
Name That Thing

10 quick questions: hear them, spell them, and see how your skills compare to the crowd.

TAKE THE QUIZ
SCRABBLE® Sprint

Test Your Knowledge - and learn some interesting things along the way.

TAKE THE QUIZ