Stands for "Earth Science Enterprise"

http://www.earth.nasa.gov/index.html

Is commonly used in meterology (for wind direction--East-South-East) In direction, it increases the 8 usual directions to 16. ESE is the 6th direction if you count them clockwise starting at North. Not quite seven, but close ;)

Stands for "Experimental School Environment"

http://www.i3net.org/schools/