Question

From where the word ENGINEERING is derived from? is there any abbreviation for it.

Answer 1

The term engineering itself has a much more recent etymology, deriving from the word engineer, which itself dates back to 1325, when an engine'er (literally, one who operates an engine) originally referred to "a constructor of military engines."-Oxford English dictionary (taken from wikipedia)

Abbreviations from my own personal experience:
eng=engineering
ME or MEEG or Mech-E= Mechanical Engineering
ELEG=Electrical Engineering
CHEG=Chemical Engineering
CIEG=Civil Engineering