[ yoo-nuh-fawr-mi-tair-ee-uhn ]

  1. supporting, conforming to, or derived from a theory or doctrine about uniformity, especially on the subject of geology.

  2. Geology. of or relating to the thesis that processes that operated in the remote geological past are not different from those observed now.

  1. a person who accepts or supports a uniformitarian theory.

Origin of uniformitarian

First recorded in 1830–40; uniformit(y) + -arian

Other words from uniformitarian

  • u·ni·form·i·tar·i·an·ism, noun

Words Nearby uniformitarian

Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2023

How to use uniformitarian in a sentence

British Dictionary definitions for uniformitarian


/ (ˌjuːnɪˌfɔːmɪˈtɛərɪən) /

  1. of or relating to uniformitarianism

  2. of, characterized by, or conforming to uniformity

  1. a supporter of a theory of uniformity or of uniformitarianism

Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012