The meaning of INTERNAL is existing or situated within the limits or surface of something. How to use internal in a sentence.

Internal medicine, also known as general medicine in Commonwealth nations, is a medical specialty for medical doctors focused on the prevention, diagnosis, and treatment of diseases in adults. Its …

INTERNAL definition: 1. inside the body: 2. inside a person's mind: 3. inside an object or building: . Learn more.

INTERNAL definition: situated or existing in the interior of something; interior. See examples of internal used in a sentence.

Definition of internal adjective in Oxford Advanced Learner's Dictionary. Meaning, pronunciation, picture, example sentences, grammar, usage notes, synonyms and more.

Define internal. internal synonyms, internal pronunciation, internal translation, English dictionary definition of internal. adj. 1. Of, relating to, or located within the limits or surface; inner.

Internal is used to describe things that exist or happen inside a country or organization. The country stepped up internal security. We now have a Europe without internal borders.

The Internal Revenue Service (IRS) administers and enforces U.S. federal tax laws.

Sep 4, 2025 · Internal Revenue Code The Constitution gives Congress the power to tax. Congress typically enacts Federal tax law in the Internal Revenue Code of 1986 (IRC). The sections of the IRC …

Dec 22, 2025 · internal (comparative more internal, superlative most internal) Of or situated on the inside. We saw the internal compartments of the machine. (medicine) Within the body.