Word Parts Beginning With E

25 word parts in the Medical Terminology guide begin with the letter E — prefixes, word roots and suffixes together. Every entry links to its own page with worked examples.

A B C D E F G H I J K L M N O P Q R S T U V X Z

Word partTypeMeaning
-ectasisSuffixdilation; expansion
ecto-Prefixoutside, outer
-ectomySuffixsurgical removal; excision
-ectopiaSuffixdisplacement; out of place
-edemaSuffixswelling from fluid
electrWord rootelectricity
-emesisSuffixvomiting
-emiaSuffixblood condition
en-Prefixin, into, inside
encephalWord rootbrain
endo-Prefixinside, within
endocrinWord rootinternal secretion; hormone secretion within the body
enterWord rootintestine
epi-Prefixupon, over, above
erythrWord rootred
-esisSuffixcondition; action
eso-Prefixinward, within
esophagWord rootesophagus
esthesiWord rootsensation; feeling
-esthesiaSuffixsensation; feeling
etiWord rootcause, origin
eu-Prefixgood, normal, well, true
ex-Prefixout, away from, outside
exo-Prefixoutside, outward
extra-Prefixoutside, beyond
Please note: This section teaches the language of medicine — what word parts mean and how terms are built. It is an educational reference, not medical advice. For the meaning of a word in your own medical record, ask the clinician who wrote it.