altostratus
noun
altostratus is a noun meaning “A principal medium-level cloud type in the form of a gray or bluish (never white) sheet or layer of striated, fibrous, or uniform appearance” (English Wiktionary, September 2026). It is spelled A-L-T-O-S-T-R-A-T-U-S, and it appears about once in every 91 million words in written English (wordfreq, 2021 data). The plural of altostratus is altostrati.
What does altostratus mean?
noun
- 1
A principal medium-level cloud type in the form of a gray or bluish (never white) sheet or layer of striated, fibrous, or uniform appearance.
Source: English Wiktionary, dump of September 2, 2026 (CC BY-SA 4.0), through kaikki.org (Wiktextract).
Forms of altostratus
- altostrati plural
Source: English Wiktionary, dump of September 2, 2026 (CC BY-SA 4.0), through kaikki.org (Wiktextract).
How common is altostratus?
Altostratus appears about once in every 91 million words in written English, the 305,310th 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).
Altostratus in Spanish, French, German and Portuguese
In the sense cloud type:
| Language | Words |
|---|---|
| French | altostratus |
| Portuguese | alto-estrato, altostratus, altostrato |
| Spanish | altostrato |
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 altostratus come from?
From alto- + stratus.
Source: English Wiktionary, dump of September 2, 2026 (CC BY-SA 4.0), through kaikki.org (Wiktextract).