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Meaning of macroevolution

mac•ro•ev•o•lu•tion

Pronunciation: (mak"rō-ev"u-l'shun or, esp. Brit., -ē"vu-), [key]
— n. Biol.
  1. major evolutionary transition from one type of organism to another occurring at the level of the species and higher taxa.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.
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