Medical Dictionary
internal
adj in·ter·nal \in-ˈtərn-əl\
Medical Definition of INTERNAL
1
: existing or situated within the limits or surface of something: as a : situated near the inside of the body <an internal layer of abdominal muscle> b : situated on the side toward the midsagittal plane of the body <the internal surface of the lung>
2
: present or arising within an organism or one of its parts <an internal stimulus>
3
: applied or intended for application through the stomach by being swallowed <an internal remedy>
—in·ter·nal·ly \in-ˈtərn-əl-ē\ adverb
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