cyanobacterium
noun
cyanobacterium is a noun meaning “Any of very many photosynthetic prokaryotic microorganisms, of phylum Cyanobacteria” (English Wiktionary, September 2026). It is spelled C-Y-A-N-O-B-A-C-T-E-R-I-U-M, and it appears about once in every 30 million words in written English (wordfreq, 2021 data). The plural of cyanobacterium is cyanobacteria.
What does cyanobacterium mean?
noun
- 1
Any of very many photosynthetic prokaryotic microorganisms, of phylum Cyanobacteria.
Source: English Wiktionary, dump of September 2, 2026 (CC BY-SA 4.0), through kaikki.org (Wiktextract).
Forms of cyanobacterium
- cyanobacteria plural
Source: English Wiktionary, dump of September 2, 2026 (CC BY-SA 4.0), through kaikki.org (Wiktextract).
How common is cyanobacterium?
Cyanobacterium appears about once in every 30 million words in written English, the 165,739th 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).
Cyanobacterium in Spanish, French, German and Portuguese
In the sense prokaryotic microorganism of phylum Cyanobacteria:
| Language | Words |
|---|---|
| French | cyanobactérie |
| German | Cyanobacterium |
| Portuguese | cianobactéria |
| Spanish | cianobacteria |
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 cyanobacterium come from?
From cyano- + bacterium.
Source: English Wiktionary, dump of September 2, 2026 (CC BY-SA 4.0), through kaikki.org (Wiktextract).