What does internal mean?
“Internal” means located or occurring within something rather than on its outside. It is used for the organs and structures of the body, as in “internal injuries,” and for the private affairs, processes, or policies of an organization, as in “internal communication.” The word can also describe something belonging within a country or system rather than between countries, as in “internal trade.” In many contexts, internal contrasts with external, especially when discussing an organization’s own affairs as opposed to those of other organizations or the public. Internal can therefore suggest both physical location and the inward-looking, sometimes private, character of a process. The related noun “internals” refers to internal affairs or internal parts, while “internally” means within an organization, system, or person.
adjectiveExisting or occurring within a person, thing, organization, or country rather than on its exterior or within the broader public sphere. “Internal” can also mean concerning the inner workings, private affairs, or processes of an organization or system.
- Situated within the body or another object.
- Concerning the inner workings, processes, or private affairs of an organization or system.
- Existing within a country, economy, or political system rather than between countries.
- Not visible or accessible from outside; internal or inward-facing.
"The committee conducted an internal review of the department's procedures."
"The scan revealed damage to several internal organs."
"The company introduced internal training to help employees understand the new system."
“Internal combustion” names the engine because the combustion happens inside the engine’s cylinders—a vivid reminder that some of the most important processes occur on the inside.
Reviewed by Deb Chak, Editor. AI-assisted content curated by RJS Tech Solutions LLP.
Where does internal come from?
The word comes through late Latin from Latin internus, meaning “inner” or “internal,” with internālis forming the adjective “internal.” Latin internus is related to intus, meaning “within” or “inside,” from which words such as intestine also developed. The English adjective was established by the 16th century and came to cover physical interiors as well as the private or inward workings of institutions.
Related word forms
How internal is actually used
The term is common in both formal and informal contexts. In organizational or political contexts, it often contrasts with external matters, while in medical contexts it may refer to the internal parts of the body or to internal medicine. “Internally” is the corresponding adverb.
Easily confused with internal
“Internal” commonly describes matters within a person, organization, or system, whereas “interior” more often describes a physical inner space or area.
“Internal” is an adjective describing something within a person or organization, while “internalize” is a verb meaning to bring an idea or feeling into oneself or one’s own perspective.