[mak-roh-ev-uh-loo-shuh n or, esp. British, -ee-vuh-]
noun Biology.
  1. major evolutionary transition from one type of organism to another occurring at the level of the species and higher taxa.

Origin of macroevolution

First recorded in 1935–40; macro- + evolution
Related formsmac·ro·ev·o·lu·tion·ar·y, adjective Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

British Dictionary definitions for macroevolution


  1. biology the evolution of large taxonomic groups such as genera and families
Derived Formsmacroevolutionary, adjective
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

macroevolution in Science


  1. Evolution that results in the formation of a new taxonomic group above the level of a species.
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.