| typpi | nitrogen |
|---|---|
| ammoniumtyppi | ammonium nitrogen |
| typpiatomi | nitrogen atom |
| typpibakteeri | nitrogen bacteria |
| kalkkityppi | calcium nitrate |
| nitraattityppi | nitrate nitrogen |
| typensidonta | nitrogen fixation |
| typensitoja | nitrogen fixer |
| typensitojabakteeri | nitrogen-fixing bacteria |