photochromism
Word Rarity
Very rare
Frequency: Zipf frequency 0.00 in modern English
27
Scrabble Score
13
Letters
2
Syllables
9
Unique Chars
Meaning
noun
The reversible transformation of the optical properties of a material when exposed to electromagnetic radiation, especially the reversible darkening of a plastic lens when exposed to sunlight.
Countable; Uncountable