Endemism

[en-dem-ik] /ɛnˈdɛm ɪk/

adjective, Also, endemical
1.
natural to or characteristic of a specific people or place; native; indigenous:
endemic folkways; countries where high unemployment is endemic.
2.
belonging exclusively or confined to a particular place:
a fever endemic to the tropics.
noun
3.
an endemic disease.
/ɛnˈdɛmɪk/
adjective
1.
present within a localized area or peculiar to persons in such an area
noun
2.
an endemic disease or plant
n.

1660s, from Greek endemos “native, dwelling in (a place), of or belonging to a people” (from en “in;” see en- (2) + demos “people, district;” see demotic) + -ic. From 1759 as an adjective. Endemical is attested from 1650s.

endemic en·dem·ic (ěn-děm’ĭk)
adj.

en·dem’i·cal·ly adv.
en·dem’ism n.
endemic
(ěn-děm’ĭk)

Our Living Language : A disease that occurs regularly in a particular area, as malaria does in many tropical countries, is said to be endemic. The word endemic, built from the prefix en-, “in or within,” and the Greek word demos, “people,” means “within the people (of a region).” A disease that affects many more people than usual in a particular area or that spreads into regions in which it does not usually occur is said to be epidemic. This word, built from the prefix epi-, meaning “upon,” and demos, means “upon the people.” In order for a disease to become epidemic it must be highly contagious, that is, easily spread through a population. Influenza has been the cause of many epidemics throughout history. Epidemics of waterborne diseases such as cholera often occur after natural disasters such as earthquakes and severe storms that disrupt or destroy sanitation systems and supplies of fresh water.