rock varnish
Word Rarity
Rare
Frequency: Zipf frequency 3.03 in modern English
23
Scrabble Score
11
Letters
4
Syllables
10
Unique Chars
Meaning
noun
A dark coating on rock surfaces exposed to the atmosphere, mostly comprising clay and oxides, which grows at only a few micrometers per thousand years; found especially in arid deserts.
Countable; Uncountable