Explain a concept through the essential attributes of the object reflected by the concept. From the logical structure, this definition includes three parts:
① Definition, that is, its connotation needs a clear concept;
(2) Definition item, which is used to explain the concept of defined item;
(3) Define connectives, which are used to connect the defined items and the connectives of the defined items.
For example, "the so-called commodity refers to the labor products produced for exchange". In this definition, "commodity" is the defined item, "labor products produced for exchange" is the defined item, and "the so-called ………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………
Extended data:
There are many methods of definition, such as real definition, word definition, relationship definition, occurrence definition, function definition, recursive definition and so on. A definition method often used in scientific research and social practice is to define the defined item by finding out the differences between adjacent genera and species.
The other is the method of word definition, that is, to clarify what concept a word expresses. In scientific works or argumentative papers, concepts are usually expressed by words, so defining some words is an important way to clarify concepts.
In order to use the method of definition correctly, we must also abide by the logical rules of definition, such as "the definition must be commensurate", "the definition item must not contain the defined item", "the definition item must be clear" and "the definition item generally cannot be negative".
In thinking practice, definition plays an important role: first, we can summarize and consolidate our understanding of things through definition; Second, definition can distinguish various things; Third, the definition is also used to test whether the concepts used by people are clear; Fourthly, it also plays an important role in the formation and formulation of scientific principles, theoretical propaganda, education and knowledge transmission.
References:
Baidu Encyclopedia-Definition Method