Definition of e-sourcing:
(n) :
The name of the Latin-script letter E/e.
(n) :
(music, informal) The second semiquaver (sixteenth note) of a beat.
(n) :
(slang) The drug ecstasy (MDMA), particularly in pill form.
(n) :
The grade below D in some grading systems. In most such systems, it is a failing grade.
(n) :
(history) A state in ancient China of varying location in present-day Shanxi, Henan, and Hubei.
(n) :
(history) Its capital, also known as Echeng and Ezhou.