| nitrogen fixation definitions |
| # | Definition | Sets |
| 1 | process of converting nitrogen gas into ammonia | 70 sets |
| 2 | the assimilation of atmospheric nitrogen by soil bacteria and its release for plant use on the death of the bacteria | 21 sets |
| 3 | process by which certain bacteria convert nitrogen gas to ammonia | 21 sets |
| 4 | the assimilation of atmospheric nitrogen by certain prokaryotes into nitrogenous compounds that can be directly used by plants. | 15 sets |
| 5 | process in which bacteria convert nitrogen gas into nitrogen compounds plants can use to make proteins | 10 sets |
| 6 | bacteria converts atmospheric nitrogen to ammonia | 8 sets |
| 7 | process of combining nitrogen gas with hydrogen to form ammonia | 8 sets |
| 8 | the process of changing free nitrogen gas into a usable form | 6 sets |
| 9 | process converting nitrogen gas into a form plants can use | 5 sets |
| 10 | process in which nitrogen gas is captured and converted into a form plants can use | 5 sets |
| 11 | the process of converting nitrogen gas into ammonia | 5 sets |
| 12 | the process by which gaseous nitrogen in the air is converted into ammonia | 5 sets |
| 13 | the conversion of atmospheric nitrogen into compounds by natural agencies or various indistrial processes. | 4 sets |
| 14 | process of converting nitrogen gas into ammonia or nitrate | 4 sets |
| 15 | the process of changing free nitrogen gas into a usable form. | 4 sets |
| 16 | the process of combining nitrogen with hydrogen to form ammonia | 4 sets |
| 17 | process of converting nitrogen gas into ammonia. | 4 sets |
| 18 | the process of capture and conversion of nitrogen into a form that is usable by plants | 3 sets |
| 19 | process in which some types of bacteria in the soil change nitrogen gas into a form of nitrogen that plants can use | 3 sets |
| 20 | the assimilation of atmospheric nitrogen by certain prokaryotes into nitrogenous compounds that can be directly used by plants | 3 sets |
| 21 | process by which nitrogen in the atmosphere is converted into a form that can be used by living things | 3 sets |
| 22 | the process by which gaseous nitrogen is converted into ammonia, a compound that organisms can use to make amino acids and other nitrogen-containing organic molecules | 3 sets |
| 23 | the conversion, by certain soil bacteria, of atmospheric nitrogen into compounds that plants and other organisms can use to synthesize amino acids. | 3 sets |
| 24 | process of converting nitrogen gas into amonia | 3 sets |
| 25 | the process of converting n2 gas to nitrate | 3 sets |
| 26 | the process of converting nitrogen gas into a form plants can use | 3 sets |
| 27 | proces in which some types of soil bacteria form nitrogen compounds that plants need | 3 sets |
| 28 | the process of changing atmospheric nitrogen into usable compounds | 3 sets |
| 29 | what is the process by which bacteria convert nitrogen gas in the air to ammonia? | 3 sets |
| 30 | converting nitrogen gas into ammonia | 3 sets |
| 31 | bacteria that live in the soil and on the roots of plants called legumes, convert nitrogen gas into ammonia | 3 sets |
| 32 | the process of changing free nitrogen into a usable form | 3 sets |
| 33 | the process by which gaseous nitrogen is converted into ammonia, a compound that organisms can use to make amino acids and other nitrogen containing organic molecules | 2 sets |
| 34 | the process of changing free nitrogen into a usable form of nitrogen | 2 sets |
| 35 | the process of making nitrogen compounds that plants need | 2 sets |
| 36 | changing nitrogen gas to usable nitrogen in the soil | 2 sets |
| 37 | when atmospheric n2 is nitrate or ammonia by lightening strikes or bacteria | 2 sets |
| 38 | converting n gas to a form plants can use | 2 sets |
| 39 | atmospheric n2 being converted into no3-1 or nh3 through lightning strikes, bacteria/algae, or a symbiotic relationship. | 2 sets |
| 40 | conversion of atmospheric nitrogen into ammonia | 2 sets |