uniformitarian

/ˌjunəˌfɔrməˈtɛriən/
noun
  1. A person who believes that the same natural laws and processes that operate today have always operated in the past, especially in geology.
    • The uniformitarian argued that ancient rock layers were formed by the same slow erosion we see today.
    • Many early geologists were uniformitarians, believing that the present is the key to the past.
    • As a uniformitarian, she rejected the idea of sudden catastrophic changes in Earth's history.
Synonyms
adjective
  1. Relating to the theory that natural processes have been consistent over time, without major catastrophic changes.
    • The textbook described the uniformitarian view that Earth changes slowly and steadily.
    • The uniformitarian principle is a foundation of modern geology.
    • His uniformitarian approach helped explain how rivers carved canyons over millions of years.
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