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Definition of crenothrix
crenothrix
/ˈkrɛnəθrɪks/
cre · no · thrix
Plural:crenothrices
crenothrix Lexical Profile
CEFR
C2
Grade
13
Tier
3
Usage
Rare
• noun
1
A genus of sheathed, filamentous iron bacteria (or a single bacterium of this genus) that thrive in stagnant or slow-moving water, where they oxidize iron and can cause reddish discoloration, foul odors, or pipe blockages in municipal water supply systems.
Word Nuance & Usage
In strict scientific and taxonomic contexts, it is capitalized and italicized as 'Crenothrix' when referring to the genus, whereas the lowercase form is used for individual organisms or general colonies.
• Nearby Words
Word Origin & Etymology
Late 19th century: Modern Latin taxonomy, derived from the Greek words 'krēnē' (spring, well) and 'thrix' (hair), referencing the thread-like appearance of these bacteria in water sources.
Cite this Entry
Wordmom. (2026). Definition of Crenothrix. In Wordmom Dictionary. Retrieved Oct 16, 2026, from https://wordmom.com/dictionary/crenothrix