orthoclase
/ˈɔɹθəklˌeɪs/
Word Rarity
Very rare
Frequency: Zipf frequency 1.43 in modern English
15
Scrabble Score
10
Letters
3
Syllables
9
Unique Chars
Meaning
noun
Potassium aluminum silicate, KAlSi₃O₈, a common feldspar of igneous, plutonic, and metamorphic rocks. Orthoclase is the main feldspar of pegmatite occurrences, where it is most commonly flesh-colored. Orthoclase is used in the ceramic and glass industries and as a decorative gravel.
Countable; Uncountable
Etymology
From ortho- + -clase.