Home › Words › M › microevolutionmicroevolutionmicroevolution · noun — small-scale changes in the history of life, such as changes in allele frequencies in a population (over a few generations); also known as change at or below the species level.Definition from Wiktionary (CC BY-SA 3.0).Among words judged in Lexicurio's Arena, microevolution ranks #14,525 of 42,820 for Qualifying.EtymologyFrom micro- + evolution, coined by Robert Greenleaf Leavitt in 1909.nounSmall-scale changes in the history of life, such as changes in allele frequencies in a population (over a few generations); also known as change at or below the species level.Definitions & examples from Wiktionary (CC BY-SA 3.0).Words closest in meaningBy meaning, not spelling — each word's AI semantic fingerprint, nearest first.microevolutional 68% match — Synonym of microevolutionary. vs microevolution →macroevolution 68% match — Large-scale patterns or processes in the history of life, including the origins of novel organism designs, evolutionary trends, adaptive radiations and extinctions. vs microevolution →microevolve 65% match — To undergo microevolution vs microevolution →microevolutive 61% match — That promotes microevolution vs microevolution →megaevolution 61% match — Very large-scale evolution vs microevolution →microchange 59% match — A very small change vs microevolution →bioevolution 58% match — The evolution of biological organisms. vs microevolution →micromutation 54% match — A very small, localized mutation vs microevolution →