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altocumulus

noun

altocumulus is a noun meaning “A fleecy cloud formation consisting of large whitish or greyish globular cloudlets with shaded portions, often grouped in flocks or rows.…” (English Wiktionary, September 2026). It is spelled A-L-T-O-C-U-M-U-L-U-S, and it appears about once in every 49 million words in written English (wordfreq, 2021 data). The plural of altocumulus is altocumuli.

What does altocumulus mean?

noun

  1. 1

    A fleecy cloud formation consisting of large whitish or greyish globular cloudlets with shaded portions, often grouped in flocks or rows. (Abbreviated Ac.)

Source: English Wiktionary, dump of September 2, 2026 (CC BY-SA 4.0), through kaikki.org (Wiktextract).

Forms of altocumulus

  • altocumuli plural

Source: English Wiktionary, dump of September 2, 2026 (CC BY-SA 4.0), through kaikki.org (Wiktextract).

How common is altocumulus?

Altocumulus appears about once in every 49 million words in written English, the 217,360th 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).

Altocumulus in Spanish, French, German and Portuguese

In the sense cloud:

LanguageWords
Frenchaltocumulus
Portuguesealto-cúmulo
Spanishaltocúmulo

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 altocumulus come from?

From alto- + cumulus.

Source: English Wiktionary, dump of September 2, 2026 (CC BY-SA 4.0), through kaikki.org (Wiktextract).