What is the meaning of HEO?

(Military) HEO stands for highly elliptical orbit
Department of Defense Dictionary of Military and Associated Terms. 31 January 2011.
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APAMilitary Dictionary (DoD). (2011). heo. Retrieved September 26, 2026, from http://smartdefine.org/heo/definitions/1956031
ChicagoMilitary Dictionary (DoD). 2011. "heo" http://smartdefine.org/heo/definitions/1956031 (accessed September 26, 2026).
HarvardMilitary Dictionary (DoD) 2011, heo, Smart Define, viewed 26 September, 2026, <http://smartdefine.org/heo/definitions/1956031>.
MLAMilitary Dictionary (DoD). "heo" 4 April 2011. Web. 26 September 2026. <http://smartdefine.org/heo/definitions/1956031>