altering

al·ter

A0229700 (ôl′tər)v. al·tered, al·ter·ing, al·ters v.tr.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).v.intr. To change or become different.

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[Middle English alteren, from Old French alterer, from Medieval Latin alterāre, from Latin alter, other; see al- in Indo-European roots.]

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al′ter·a·bil′i·ty, al′ter·a·ble·ness n.al′ter·a·ble adj.al′ter·a·bly adv.

Thesaurus

Noun

1.

altering - the sterilization of an animal; "they took him to the vet for neutering"neutering, fixingsterilisation, sterilization - the act of making an organism barren or infertile (unable to reproduce)castration, emasculation - neutering a male animal by removing the testiclesspaying - neutering a female by removing the ovaries