mac·ro·ev·o·lu·tion 
(măk′rō-ĕv′ə-lshən, -ē′və-)
(măk′rō-ĕv′ə-lshən, -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·lution·ar′y (-shə-nĕr′ē) adj.