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English

azotobacter

|a-zo-to-bac-ter|

C2

🇺🇸

/ˌæzəˈtoʊˌbæktər/

🇬🇧

/ˌæzəʊtəˈbæktə/

nitrogen-fixing soil bacterium

Etymology
Etymology Information

'azotobacter' originates from New Latin, specifically the word 'Azotobacter', where 'azoto-' derived from French 'azote' (from Greek a- 'not' + zōē 'life') meant 'nitrogen' and 'bacter' came from Greek 'baktērion' meaning 'little rod'.

Historical Evolution

'azotobacter' was coined in scientific New Latin in the 19th century as a compound of 'azoto-' (relating to azote/nitrogen) and 'bacter' (rod); this formation entered modern English usage as the genus name 'Azotobacter' for certain nitrogen-fixing soil bacteria.

Meaning Changes

Initially, the elements literally suggested 'nitrogen rod' (a formation referring to nitrogen-associated rod-shaped microbes), but over time it evolved into the technical name for a genus of nitrogen-fixing soil bacteria.

Meanings by Part of Speech

Noun 1

a genus of free-living, nitrogen-fixing soil bacteria that convert atmospheric nitrogen into forms plants can use; often found in soil and known for producing large cells and cysts.

Azotobacter plays an important role in improving soil fertility by fixing atmospheric nitrogen.

Synonyms

nitrogen-fixing bacteriumdiazotroph

Last updated: 2025/12/08 07:16