| an arrangement of five objects, as trees, in a square or rectangle, one at each corner and one in the middle. |
| the offspring of a zebra and a donkey. |
epidemic ep·i·dem·ic (ěp'ĭ-děm'ĭk) or ep·i·dem·i·cal (-ĭ-kəl)
adj.
Spreading rapidly and extensively by infection and affecting many individuals in an area or a population at the same time, as of a disease or illness. n.
An outbreak or unusually high occurrence of a disease or illness in a population or area.
epidemicity ep·i·de·mic·i·ty (ěp'ĭ-də-mĭs'ĭ-tē)
n.
The ability to spread from one host to others; the state of being epidemic.
| epidemic (ěp'ĭ-děm'ĭk) Pronunciation Key
An outbreak of a disease or illness that spreads rapidly among individuals in an area or population at the same time. See also endemic, pandemic. |
A contagious disease that spreads rapidly and widely among the population in an area. Immunization and quarantine are two of the methods used to control an epidemic.