| 单词 | precancerous | 
| 释义 | > as lemmasprecancerous   precancerous adj.  Brit.  , U.S.   Medicine occurring as a precursor to cancer.ΘΚΠ the world > health and disease > ill health > a disease > diseases of tissue > 			[adjective]		 > cancer > previous to cancer precancerous1879 pre-malignant1884 1879    Lancet 1 Mar. 299/1  				The pre-cancerous period of the malignant disease. 1899    J. Hutchinson in  Arch. Surg. 10 182  				An early stage of epithelioma;—a pre-cancerous stage. 1975    Sci. Amer. Nov. 78/3  				Screening programs have an additional shortcoming: for every cancer they detect they reveal perhaps 10 other abnormalities, many of which seem to be precancerous. 1994    Nat. Health Nov. 8/2  				People who already have pre-cancerous changes in their lungs. < as lemmas  | 
	
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