morbific การใช้

As originally employed by British Registrar-General's department, the term included the diseases which were " epidemic, endemic and contagious, " and were regarded as owing their origin to the presence of a morbific principle in the system, acting in a manner analogous to, although not identical with, the process of fermentation.
The "'fermentation theory "'of disease is the ( now obsolete ) concept that many diseases, including the diseases which were " epidemic, endemic and contagious ", owe their origin to the presence of a " morbific principle " in the system, acting in a manner analogous to, although not identical with, the process of fermentation.