macroevolution

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mac·ro·ev·o·lu·tion

 (măk′rō-ĕv′ə-lo͞o′shən, -ē′və-)
n.
Large-scale evolution occurring over a very long period time that results in the formation of new species and higher-level taxonomic groups.

mac′ro·ev′o·lu′tion·ar′y (-shə-nĕr′ē) adj.

macroevolution

(ˌmækrəʊˌiːvəˈluːʃən)
n
(Biology) biology the evolution of large taxonomic groups such as genera and families
ˌmacroˌevoˈlutionary adj

mac•ro•ev•o•lu•tion

(ˌmæk roʊˌɛv əˈlu ʃən; esp. Brit. -ˌi və-)

n.
major evolutionary change of species and taxa.
[1935–40]
mac`ro•ev`o•lu′tion•ar′y, adj.
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.macroevolution - evolution on a large scale extending over geologic era and resulting in the formation of new taxonomic groupsmacroevolution - evolution on a large scale extending over geologic era and resulting in the formation of new taxonomic groups
organic evolution, phylogenesis, phylogeny, evolution - (biology) the sequence of events involved in the evolutionary development of a species or taxonomic group of organisms