Scientific Concept and Definition

What a concept is in logic and science

A concept represents a basic category of logic. According to the Philosophical Encyclopedic Dictionary, it is a thought that, in the most generalized form, reflects various objects and phenomena of real reality, as well as objective connections between them.

Any concept is formed through the rigorous fixation of attributes. These attributes include both the internal properties of the phenomena themselves and the relationships they enter into with one another.

Every concept has two fundamental characteristics:

• Intension of a concept. This is the aggregate of all specific attributes of an object that are reflected in our thought.
• Extension of a concept. This is the real set (or class) of objects, phenomena, or processes to each of which the attributes making up the intension apply.

It is important to clearly distinguish between everyday notions and rigorous science. A special (scientific) concept differs fundamentally from an everyday one. It always acts as the result of deep theoretical generalization and is a fully legitimate fact of a specific scientific framework.

The term as an intellectual tool

In professional language, a scientific concept relies on a term. A term is not just a word; it is the material sign of a scientific concept, serving as the primary intellectual tool of the researcher or physician.

Key functions of a term:

1. Theory construction. It is through the terminological apparatus that scientific propositions, principles, laws, and global concepts are formulated.
2. Recording discoveries. A term often becomes the first herald of an entirely newly discovered phenomenon or scientific breakthrough.

The main feature of terminological vocabulary is that the meaning of a term (unlike words in common usage) is revealed exclusively through its definition. Non-terms can be described with synonyms or emotions, whereas a term requires logical rigor.

Definition — a strict boundary of meaning

Definition (from the Latin word definitio) is the most concise yet exhaustive formulation of the very essence of the concept being termed, that is, what exactly is denoted by this term.

What constitutes the specificity of a scientific definition:

• Essence. A correctly constructed definition indicates only the core content of the concept, without secondary and distracting details.
• Function. A definition does not merely explain or interpret meaning; it strictly establishes it within the scientific field.
• Main principle. The requirement to define the meaning of a term is entirely equivalent to the requirement to provide a strict definition of the corresponding scientific concept.

Practical analysis of definitions

Let us examine the mechanism of a definition using classical natural science examples. Note how ancient roots shape the precise meaning of a modern scientific concept.

• Ontogenesis. The term is derived from the Greek words on, ontos (being, creature) and genesis (development, origin). Its strict definition is as follows: it is the totality of all successive morphological, physiological, and biochemical transformations that an organism undergoes from its inception to the end of life.
• Aerophiles. Based on the Greek roots aër (air) and philos (loving). The definition establishes that these are specific microorganisms capable of obtaining vital energy exclusively from the oxidation of oxygen in their surrounding environment.

Briefly: answers to topical questions

Class and exam questions

What else to study on this topic

• Grammatical and logical structure of a medical term
• Greco-Latin terminological elements in clinical terminology
• Logical errors in constructing scientific definitions
• Classification of concepts: singular, general, and empty concepts
• The relationship between the extension and intension of a concept

Other topics in the section "On Theoretical Issues of Terminology"

Prepared by WhiteCoat Pro faculty in accordance with the medical school curriculum. For educational purposes only.