electro-

1.
a combining form representing electric, or electricity, in compound words:
electromagnetic.
Also, especially before a vowel, electr-.
Origin
electr(ic) + -o-
British Dictionary definitions for electro-

electro-

combining form
1.
electric or electrically: electrocardiograph, electrocute
2.
electrolytic: electroanalysis
Word Origin
from New Latin, from Latin ēlectrum amber, from Greek ēlektron
Word Origin and History for electro-

before vowels electr-, word-forming element meaning "electrical, electricity," Latinized form of Greek elektro-, comb. form of elektron "amber" (see electric).

electro- in Medicine

electro- or electr-
pref.

  1. Electricity; electric; electrically: electrocautery.

  2. Electron: electronegative.