Go to MSN Homeencarta®
Dictionary
Find
in
Dictionary
Thesaurus
Translations
ABCDEFGHIJKLMNOPQRSTUVWXYZ
Click to move up the list of words
punching bag
punchline
punchy
punctate
punctilio
punctilious
punctual
punctuate
punctuated equilibrium
punctuation
punctuation mark
puncture
pundit
Pune
pung
pungent
Punic
Click to move down the list of words
Also available:

World English Dictionary
Dictionnaire Français

punctuated equilibrium
punc·tu·a·ted e·qui·lib·ri·um


noun 
Definition:
 
theory of evolution: a theory of evolution holding that evolutionary change tends to be characterized by long periods of stability, or equilibrium, punctuated by episodes of very fast development
Encarta® World English Dictionary [North American Edition] © & (P)2009 Microsoft Corporation. All rights reserved. Developed for Microsoft by Bloomsbury Publishing Plc.
Advertisement
© 2009 Microsoft