verb \ˈl-tər\

: to change (something)

: to make a change to (a piece of clothing) so that it will fit better

: to remove the sex organs of (an animal) so that the animal is unable to reproduce


Full Definition of ALTER

transitive verb
:  to make different without changing into something else
:  castrate, spay
intransitive verb
:  to become different
al·ter·abil·i·ty \ˌl-t(ə-)rə-ˈbi-lə-tē\ noun
al·ter·able \ˈl-t(ə-)rə-bəl\ adjective
al·ter·ably \-blē\ adverb
al·ter·er \-tər-ər\ noun

Examples of ALTER

  1. Alcohol can alter a person's mood.
  2. He altered his will to leave everything to his sister.
  3. This one small event altered the course of history.
  4. The place has altered in the 10 years since I left.
  5. I'll need to have the dress altered before the wedding.

Origin of ALTER

Middle English, from Medieval Latin alterare, from Latin alter other (of two); akin to Latin alius other — more at else
First Known Use: 14th century

Rhymes with ALTER


transitive verb \ˈl-tər\   (Medical Dictionary)
al·teredal·ter·ing \-t(ə-)riŋ\

Medical Definition of ALTER


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