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v. al·tered, al·ter·ing, al·ters
1. To change or make different; modify: altered my will.
2. To adjust (a garment) for a better fit.
3. To castrate or spay (an animal, such as a cat or a dog).
To change or become different.
[Middle English alteren, from Old French alterer, from Medieval Latin alterāre, from Latin alter, other; see al- in Indo-European roots.]
al′ter·a·bil′i·ty, al′ter·a·ble·ness n.
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.