Alundum
7 lettersnounrareUpdated June 2026
Definition
A hard abrasive material made by fusing aluminium oxide, used in grinding and refractory applications.
“The grinding wheel was made from alundum, chosen for its exceptional hardness.”
Pronunciation
Syllables
a·lun·dum
Related Words
Synonyms
corundum
Word Game Tips
🟩
Wordle
Three vowels (A, U, U) with double U and ends in -UM, an obscure technical term unlikely in Wordle.
🔤
Scrabble
Worth 10 points, the double U and M at the end make this a strong specialist play.
Words Related to Alundum
Explore Similar Words
Try These Tools
Dictionary References
Look up alundum in an authoritative dictionary for full definitions, pronunciation, and etymology.

Ready to test your word skills?
Download Word Challenge for unlimited word puzzles, a fresh Daily Challenge, and head-to-head multiplayer. Guess the hidden word in six tries or fewer!