What does aluminium mean?
Aluminium is a chemical element — symbol Al, atomic number 13 — and the most abundant metal in the Earth's crust. It is a silvery-white metal prized for being remarkably light, corrosion-resistant, and easy to shape, which has made it indispensable in aircraft manufacture, packaging, building construction, power transmission, and countless everyday objects such as drink cans, foil, and cookware. Although it never occurs free in nature, it is extracted commercially chiefly from bauxite ore. The name 'aluminium' is the standard British and international spelling, while American English uses 'aluminum'; both denote the identical substance. Once costlier than gold in the nineteenth century, aluminium became cheap after efficient electrolytic refining was developed, transforming it from a luxury curiosity into one of the most widely used metals in the modern world.
nounA lightweight, silvery-white metallic element (symbol Al, atomic number 13), the most abundant metal in the Earth's crust, used widely in construction, packaging, transport, and electronics.
- The metallic chemical element aluminium (symbol Al, atomic number 13): a light, silvery, corrosion-resistant metal.
"The aircraft's fuselage was built almost entirely from aluminium to keep the weight down."
"Soft-drink cans are made of thin aluminium that can be recycled endlessly without losing quality."
"Modern window frames are often clad in powder-coated aluminium for durability and a clean finish."
As a mass noun referring to the substance, aluminium is normally uncountable ('a sheet of aluminium'). A plural is rare and would only appear when counting distinct items made of the metal or, technically, distinct isotopes/species in chemistry.
"The scrapyard sorted the aluminiums by alloy type before smelting."
In the 1850s aluminium was so rare and precious that Napoleon III reserved aluminium cutlery for his most honoured guests, while lesser visitors had to make do with gold.
Reviewed by Deb Chak, Editor. AI-assisted content curated by RJS Tech Solutions LLP.
Etymology of aluminium
The name derives from 'alumina', the oxide of aluminium identified in the eighteenth century, which itself comes from Latin 'alumen', meaning alum or astringent salt. The element name was coined in the early nineteenth century as chemists isolated the metal, with Humphry Davy having earlier proposed related names for the then-hypothetical substance. The ending '-ium' follows the convention for metallic elements, though American usage later shortened the spelling to 'aluminum'. The Latin root 'alumen' also gives us the words 'alum' and 'alumina'.
How aluminium is actually used
The spelling 'aluminium' is standard in British English and most international scientific usage, while American English uses 'aluminum'. Both names refer to exactly the same element; IUPAC accepts both. The word is neutral in register and appears everywhere from technical engineering contexts to everyday household language.
Easily confused with aluminium
'Aluminum' is the standard American spelling and pronunciation of the same metal, while 'aluminium' is the form used in Britain and most of the Commonwealth.