Redefinition (noun)

1. The act of redefining something; the process of giving a new definition to a word, phrase, or concept.
2. The new definition given to something that has been redefined.

Origin:

From the verb redefine, which comes from the prefix re- meaning again and the verb define, meaning to set the boundaries of something. .

Examples:

1. The redefinition of the word "marriage" to include same-sex couples was a historic moment in the LGBTQ rights movement.
2. The company's redefinition of its mission statement was intended to reflect its new focus on sustainability.
3. The government's redefinition of poverty included new criteria that would make more people eligible for assistance.
4. The teacher"s redefinition of the word "success" to include personal growth and happiness was well-received by the students.
5. The philosopher"s redefinition of the concept of "truth" challenged traditional notions of what it means to be true.