Medical Definition of invert
1a: to reverse in position, order, or relationship <adjacent sequences of DNA and RNA that are complementary and inverted>b: to subject to inversion
2a: to turn inside out or upside downb: to turn inward <when a foot is inverted its forepart tends to approach the midline of the body—Journal of the American Medical Association>
: to undergo inversion <a normal nipple that inverts later in life can be an ominous sign—P. G. Donohue>
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