英语词源字典 - 在线词源网站

comorbidity (n.)[comorbidity 词源字典]: 1985, from co- "along with" + morbidity "diseased condition." Comorbid (adj.) is a 1990 back-formation.[comorbidity etymology, comorbidity origin, 英语词源]
morbid (adj.): 1650s, "of the nature of a disease, indicative of a disease," from Latin morbidus "diseased," from morbus "sickness, disease, ailment, illness," from root of mori "to die," which is possibly from PIE root *mer- "to rub, pound, wear away" (cognates: Sanskrit mrnati "crushes, bruises;" Greek marainein "to consume, exhaust, put out, quench," marasmus "consumption"). Transferred use, of mental states, is from 1777. Related: Morbidly; morbidness.
morbidity (n.): 1721, from morbid + -ity.
premorbid (adj.): also pre-morbid, 1905, from pre- + morbid.
morbific: "Causing disease", Mid 17th century: from French morbifique or modern Latin morbificus, from Latin morbus 'disease'.