alumina
/əˈl(j)uːmɪnə/noun
alumina is spelled A-L-U-M-I-N-A: 7 letters and 4 syllables. It appears about once in every 2 million words in written English, the 40,703rd most frequent word form (wordfreq, 2021 data). As a noun, alumina means “Aluminum oxide, especially when used in mining, material sciences or ceramics, a refractory solid compound” (English Wiktionary, September 2026). The plural of alumina is aluminas.
How many letters and syllables are in alumina?
| Letters | 7: A-L-U-M-I-N-A |
|---|---|
| Syllables | 4 (from its American pronunciation) |
| In writing | about once in every 2 million words; the 40,703rd 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 alumina?
Alumina appears about once in every 2 million words in written English, the 40,703rd 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 alumina?
- UK /əˈl(j)uːmɪnə/
Alumina has 4 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). Recordings: LL-Q1860_(eng)-Flame,_not_lame-alumina.wav, Wikimedia Commons (author and licence on each file's page).
Forms of alumina
- aluminas plural
- aluminia
Source: English Wiktionary, dump of September 2, 2026 (CC BY-SA 4.0), through kaikki.org (Wiktextract).
What does alumina mean?
The meanings the English Wiktionary records, quoted as written there (source below).
noun
- 1
Aluminum oxide, especially when used in mining, material sciences or ceramics, a refractory solid compound.
Source: English Wiktionary, dump of September 2, 2026 (CC BY-SA 4.0), through kaikki.org (Wiktextract).
Alumina in Spanish, French, German and Portuguese
In the sense aluminum oxide:
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 alumina come from?
From the combining form of Latin alumen + -a.
Source: English Wiktionary, dump of September 2, 2026 (CC BY-SA 4.0), through kaikki.org (Wiktextract).