aluminum

The word 'aluminum' has a relatively modern origin, coined in the early 19th century by the English chemist Sir Humphry Davy. He based the name on 'alumina', the term for aluminum oxide, which was derived from the Latin 'alumen', meaning 'alum' (a bitter salt used in dyeing and medicine). Davy initially proposed 'alumium', then 'aluminum', and finally 'aluminium'; the '-ium' suffix follows the pattern of other metallic elements (e.g., sodium, potassium), denoting it as a chemical element. The spelling 'aluminum', without the second 'i', became standard in American English, while 'aluminium' is preferred in British English.

The word is a simplex form. It is a modern chemical term derived from the substance 'alumina' (aluminum oxide), which itself was named from the mineral 'alum'.