Sporadic Definition

spə-rădĭk, spô-
Happening from time to time; not constant or regular; occasional.
Webster's New World
Widely separated from others, scattered, or isolated in occurrence; appearing singly, apart, or in isolated instances.
Webster's New World
Not epidemic, endemic, or inherited. Used of a disease or condition.
Most cancers are sporadic, caused by genetic mutations that are not heritable.
American Heritage Medicine

Origin of Sporadic

  • Medieval Latin sporadicus scattered from Greek sporadikos from sporas sporad- sper- in Indo-European roots

    From American Heritage Dictionary of the English Language, 5th Edition

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