What does evert mean?
"Evert" is a formal English verb meaning to turn outward or inside out. It appears most often in medical and biological contexts, where it describes the turning of an organ or body surface away from its usual position — as when an examiner everts an eyelid to inspect its underside, or when a surgical specimen shows an everted margin. Outside medicine it is rare but can be used for any action of turning a thing inside out or outward, such as emptying a bag by everting it. The word derives from Latin evertere, formed from e- (out) and vertere (to turn), making it a sibling of invert, subvert, and avert, which share the same root. Because its everyday counterpart is simply the phrase "turn inside out," evert survives mainly as precise technical vocabulary, prized by clinicians and biologists for its exactness. It should not be confused with invert, its near-opposite, or with avert, which means to ward off or prevent.
verbTo turn something inside out or outward; especially, in medicine and biology, to turn an organ or part outward from its normal position.
- To turn outward or inside out, especially of a bodily organ or structure (medicine/biology).
- More generally, to turn something inside out or outward.
"During the examination, the doctor gently everted the eyelid to check for foreign material."
"The surgeon everted the wound margins to examine the underlying tissue."
"He everted his pockets to show they were empty."
Your own eyelid is a natural evert-er: doctors flip it inside out with a fingertip to hunt for hidden debris.
Reviewed by Deb Chak, Editor. AI-assisted content curated by RJS Tech Solutions LLP.
Etymology of evert
"Evert" comes from Latin evertere, combining the prefix e- (out) with vertere (to turn), so its literal sense is "to turn out." It entered English in the early 17th century as learned vocabulary alongside other vertere derivatives such as invert, avert, convert, pervert, and subvert. Its modern use is concentrated in medicine and biology, where it denotes turning an organ or tissue surface outward.
Related word forms
How evert is actually used
Formal and technical register; most common in medical and biological writing (e.g., everted eyelid, everted bladder), where it carries a precise anatomical meaning of turning a surface outward.
Easily confused with evert
"Invert" means to turn inward or upside down, while "evert" means to turn outward or inside out — they are essentially opposite actions.
"Avert" means to turn away or prevent (as in averting disaster), whereas "evert" means to turn outward.