ていぎ定義teigi
1.

The process of clearly specifying the meaning of a term or the content of a concept in order to distinguish it from others, making the implications and scope of that term precise and understandable.

2.

A formal explanation that delineates the essential attributes of a concept, highlighting its unique characteristics to set it apart from similar concepts or terms.

3.

The act of establishing boundaries around the meaning or usage of a term, often by stating the conditions or criteria that must be met for something to fall within that term's definition.

Example:

定義するのが難しい語もある。

さいていぎ再定義saiteigi
1.

The process of redefining a concept or term to clarify its meaning or adapt it to new contexts.

2.

An act of providing a new interpretation or explanation for an existing definition in order to enhance understanding or relevance.