HEO meaning in Academic & Science ?

Answer: What is High Earth Orbit mean?

A high Earth orbit is a geocentric orbit with an altitude entirely above that of a geosynchronous orbit (35,786 kilometres, 22,236 mi). The orbital periods of such orbits are greater than 24 hours, therefore satellites in such orbits have an apparent retrograde motion – that is, even if they are in a prograde orbit (0° ≤ inclination < 90°), their orbital velocity is lower than Earth's rotational speed, causing their ground track to move westward on Earth's surface.

reference

Full Form	Category
Highly Elliptical Orbit	Academic & Science
High Earth Orbit	Academic & Science
Heavy Equipment Operations	Business
Health Education Outreach	Community
Human Exploration and Operations	General
Human Eye optimization	General
Higher Executive Officer	General
Heavy Equipment Operator	General
Harbor Empowerment Order	Governmental
High Energy Orbit	Governmental
Hispanic Employee Organization	Governmental
Haelogo, Papua New Guinea	Regional
Heng On, Hong Kong	Regional
Hockey Eastern Ontario	Sports