orthoclase
noun
orthoclase is spelled O-R-T-H-O-C-L-A-S-E: 10 letters and 3 syllables. It appears about once in every 37 million words in written English, the 187,122nd most frequent word form (wordfreq, 2021 data). As a noun, orthoclase means “Potassium aluminum silicate, KAlSi₃O₈, a common feldspar of igneous, plutonic, and metamorphic rocks. Orthoclase is the main feldspar of pegmatite…” (English Wiktionary, September 2026). The plural of orthoclase is orthoclases.
How many letters and syllables are in orthoclase?
| Letters | 10: O-R-T-H-O-C-L-A-S-E |
|---|---|
| Syllables | 3 (from its American pronunciation) |
| In writing | about once in every 37 million words; the 187,122nd most frequent word form |
| Wrong spellings searched | none measured in search |
Sources: letters and syllables from the English Wiktionary's hyphenation or pronunciation and the CMU Pronouncing Dictionary; written frequency: wordfreq 3.1 (a 2021 snapshot of Wikipedia, subtitles, news, books, web text and social media).
How common is orthoclase?
Orthoclase appears about once in every 37 million words in written English, the 187,122nd most frequent word form in the list.
Source: written frequency: wordfreq 3.1 (a 2021 snapshot of Wikipedia, subtitles, news, books, web text and social media).
How do you pronounce orthoclase?
Orthoclase has 3 syllables (counted from its American pronunciation in the CMU Pronouncing Dictionary).
Source: English Wiktionary, dump of September 2, 2026 (CC BY-SA 4.0), through kaikki.org (Wiktextract).
Forms of orthoclase
- orthoclases plural
Source: English Wiktionary, dump of September 2, 2026 (CC BY-SA 4.0), through kaikki.org (Wiktextract).
What does orthoclase mean?
The meanings the English Wiktionary records, quoted as written there (source below).
noun
- 1
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.
Source: English Wiktionary, dump of September 2, 2026 (CC BY-SA 4.0), through kaikki.org (Wiktextract).
Orthoclase in Spanish, French, German and Portuguese
In the sense potassium aluminum silicate:
Source: English Wiktionary, dump of September 2, 2026 (CC BY-SA 4.0), through kaikki.org (Wiktextract). Translations are Wiktionary's, by sense; a linked word has its own PlainSpell page.
Where does orthoclase come from?
From ortho- + -clase.
Source: English Wiktionary, dump of September 2, 2026 (CC BY-SA 4.0), through kaikki.org (Wiktextract).