| 单词 | nif | 
| 释义 | nif1noun nɪf Genetics 
 conjunction nɪf English Regional, South-Western rare 
 Origin1970s. Acronym from the initial letters of nitrogen fixation NIF2noun Immunology 
 noun Pharmacology 
 Origin1970s; earliest use found in Journal of Immunology nif1nounnɪf Genetics 
 conjunctionnɪf English Regional, South-Western rare 
 Origin1970s. Acronym from the initial letters of nitrogen fixation<br>mid 18th century; earliest use found in Exmoor Scolding. Reduced form of an if. NIF2noun Immunology 
 noun Pharmacology 
 Origin1970s; earliest use found in Journal of Immunology<br>1980s; earliest use found in Journal Cardiovascular Pharmacology.  | 
	
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