a. The act or an instance of moving; a change in place or position.
b. A particular manner of moving.
2. A change in the location of troops, ships, or aircraft for tactical or strategic purposes.
a. A series of actions and events taking place over a period of time and working to foster a principle or policy: a movement toward world peace.
b. An organized effort by supporters of a common goal: a leader of the labor movement.
4. A tendency or trend: a movement toward larger kitchens.
5. A change in the market price of a security or commodity.
a. An evacuation of the bowels.
b. The matter so evacuated.
7. The suggestion or illusion of motion in a painting, sculpture, or design.
8. The progression of events in the development of a literary plot.
9. The rhythmical or metrical structure of a poetic composition.
10. Music A self-contained section of an extended composition.
11. Linguistics In generative grammar, a transformation in which a constituent in one part of a syntactic structure is copied or displaced into a different location, creating a new structure.
12. A mechanism, such as the works of a watch, that produces or transmits motion.
The American Heritage® Dictionary of the English Language, Fifth Edition copyright ©2018 by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
Indo-European & Semitic Roots Appendices
Thousands of entries in the dictionary include etymologies that trace their origins back to reconstructed proto-languages. You can obtain more information about these forms in our online appendices:
The Indo-European appendix covers nearly half of the Indo-European roots that have left their mark on English words. A more complete treatment of Indo-European roots and the English words derived from them is available in our Dictionary of Indo-European Roots.