carcinogen (n.)youdaoicibaDictYouDict[carcinogen 词源字典]
"cancer-causing substance," 1853, from carcinoma + -gen.[carcinogen etymology, carcinogen origin, 英语词源]
carcinogenic (adj.)youdaoicibaDictYouDict
1926, from carcinogen + -ic.
hallucinogen (n.)youdaoicibaDictYouDict
"drug which induces hallucinations," 1954, from stem of hallucination + -gen.
hallucinogenic (adj.)youdaoicibaDictYouDict
1952, from hallucinogen + -ic.
afibrinogenaemiayoudaoicibaDictYouDict
"Absence of fibrinogen in the blood, usually resulting in impaired coagulation; an acquired or inherited condition characterized by this", 1940s; earliest use found in Journal of the American Medical Association. From a- + fibrinogen + -aemia, after German Afibrinogenämie.