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ecto-, exo-

Prefix Medical Terminology

Outside or outer.

Example: ectopic pregnancy (implantation outside the uterus)

Sources

Appendix A: Word Parts and What They Mean · MedlinePlus, U.S. National Library of Medicine
Anatomy and Physiology 2e, Chapter 28 Key Terms · OpenStax

Related terms

dia-Through, across, or apart.
diplo-Double or twofold.
dis-Apart, separation, or reversal.
dys-Difficult, painful, or abnormal.
ef-Out of or away from.
en-In or inside.
endo-Within or inner.
epi-Upon, over, or on top of.

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