What does insufflate mean?
Insufflate is a formal verb meaning to blow air, gas, or another substance into a space so that it becomes filled or expanded. Its general technical use includes introducing gas into a vessel, chamber, or other enclosed area. In medicine, the word has a more specific application: insufflation may refer to introducing gas into a body cavity, such as the lungs, often to assist ventilation or examination. The term is less common in everyday speech, where inflate or blow up may be used instead, but it is useful when describing the deliberate introduction of a substance into a defined space. Although insufflate and insulate look similar, they have entirely different meanings: one concerns blowing into a space, while the other concerns blocking the transfer of heat, sound, or electricity.
verbTo blow air, gas, or another substance into a space, especially to fill or expand it. In medicine, it can mean to introduce gas into a body cavity or to inflate the lungs.
- To blow air, gas, or another substance into an enclosed or partially enclosed space in order to fill or expand it.
- To introduce gas into a body cavity, especially to inflate the lungs for medical purposes.
"The clinician insufflated oxygen into the patient's lungs during the procedure."
"The technician insufflated the chamber with carbon dioxide before beginning the experiment."
"The anaesthetist carefully insufflated the lungs and checked the patient's oxygen level."
The word comes from the same Latin idea as a breath being blown into something, giving us both the medical term and its image of filling a space with air or gas.
Reviewed by Deb Chak, Editor. AI-assisted content curated by RJS Tech Solutions LLP.
Where does insufflate come from?
Insufflate comes from Latin insufflare, formed from in- meaning 'into' and sufflare, meaning 'to blow'. The word entered English through scientific and medical usage, where it describes introducing air or gas into a cavity or organ. It is related to inflate and deflate, which also derive from Latin verbs based on flare, 'to blow'.
Related word forms
How insufflate is actually used
Insufflate is relatively uncommon in general conversation but standard in medical, laboratory, and technical contexts. It is more precise than inflate when air or gas is deliberately blown into a particular space.
Easily confused with insufflate
Insufflate means to blow air or gas into a space, whereas insulate means to prevent heat, sound, or electricity from passing through or escaping.