What does epidemics mean?
Epidemics is the plural of epidemic, referring to widespread outbreaks of infectious disease that affect many people within a community, region, or population at the same time. The term is central to medicine, public health, and history, describing events such as outbreaks of cholera, influenza, or plague that have repeatedly transformed societies. By extension, the word is often used figuratively for any harmful phenomenon that spreads rapidly — epidemics of violence, addiction, or misinformation — though this figurative use carries a strongly negative connotation and should be employed with care. Epidemics are distinguished from pandemics, which spread across countries or continents rather than remaining localized. The word derives from Greek roots meaning 'upon the people,' reflecting how disease descends upon populations collectively. Understanding the term helps readers interpret both scientific writing and everyday journalism with precision.
Widespread occurrences of an infectious disease affecting many people in a community or region simultaneously.
"The epidemics of the nineteenth century killed millions across Europe's crowded cities."
Sudden, rapid increases in harmful non-medical phenomena regarded as spreading like disease.
"Policymakers have struggled to curb the twin epidemics of obesity and diabetes."
Already a plural form; singular is 'epidemic'. Often used with definite article when referring to specific historic outbreaks.
"Cholera epidemics swept through London repeatedly during the 1800s."
In ancient Greek, 'epidemos' meant simply 'upon the people' — before it meant disease, it described anything that visited the public at large.
Reviewed by Deb Chak, Editor. AI-assisted content curated by RJS Tech Solutions LLP.
Etymology of epidemics
Epidemics comes from the Greek 'epidēmia' ('prevalence among the people'), formed from 'epi' ('upon') and 'dēmos' ('people'). The term passed through Late Latin and French into English in the early 17th century as 'epidemic.' It shares its root with related terms such as epidemiology, the study of disease distribution, and contrasts etymologically with 'endemic' ('in the people'), which describes disease constantly present in a population.
Related word forms
How epidemics is actually used
Formal to neutral register, common in medical, historical, and journalistic writing. In figurative use, 'epidemic(s)' carries a negative connotation and can sound alarmist if applied loosely.
Easily confused with epidemics
An epidemic is a sudden rise in disease confined to a community or region, while a pandemic spreads across multiple countries or continents.