Hafnium
7 lettersnounrareUpdated June 2026
Definition
A grey lustrous metallic chemical element with atomic number 72, chemically similar to zirconium and used in nuclear reactor control rods and electronic filaments.
“Hafnium's high neutron absorption capacity makes it invaluable in the control rods of nuclear reactors.”
Pronunciation
Syllables
haf·ni·um
Related Words
Synonyms
Word Game Tips
Wordle
Rare element name with F and M, both are less common Wordle letters making this hard to guess
Scrabble
Contains F worth 4 points and M worth 3 points, good tile value for a chemistry specialist word
Words Related to Hafnium
Words one letter different
Change a single letter of “hafnium” to make these 7-letter words — useful for Wordle and crossword clues.
Explore Similar Words
Try These Tools
Dictionary References
Look up hafnium 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!