---

---

Abbreviation	Definition
DY	Deputy Director
DYN	DYNamic
E	East
E	Eastern
E	Eccentricity
E	Elevation angle
E	Engine
E	Exempt
E	Exploration
E&D	Engineering and Development
E&D	Engineering and Development Directorate, Johnson Space Center
E&I	Electrical and Instrumentation
E&OO	Engineering and Operations Office
E/C	Encoder/Coupler
E/L	Entry/Landing
E/M	Engineering Model
E/O	Engineering/Operations
E/O-IMS	Engineering/Operations - Information Management System
E/W	Energy to Weight Ratio
EA	EAch

---