I went and did some more "Wiki-ing" and found two pages
http://en.wikipedia.org/wiki/Low_earth_orbit
http://en.wikipedia.org/wiki/List_of_orbits
The first page has LEO
A low Earth orbit (LEO) is generally defined as an orbit within the locus extending from the Earth’s surface up to an altitude of 2,000 km. Given the rapid orbital decay of objects below approximately 200 km, the commonly accepted definition for LEO is between 160 - 2,000 km (100 - 1,240 miles) above the Earth's surface.[1][2]
With the exception of the lunar flights of the Apollo program, and the sub-orbital flights of the Mercury program, the aborted Soyuz 18a mission and the X-15 and SpaceShipOne rocket planes, all human spaceflights have been in LEO, including all Space Shuttle and space station missions. The altitude record for a human spaceflight in LEO was Gemini 11 with an apogee of 1,374.1 km.
The second lists various orbit classifications.
* Low Earth orbit (LEO): Geocentric orbits ranging in altitude from 0–2,000 km (0–1,240 miles)
* Medium Earth orbit (MEO): Geocentric orbits ranging in altitude from 2,000 km (1,240 miles) to just below geosynchronous orbit at 35,786 km (22,240 miles). Also known as an intermediate circular orbit.
* Geosynchronous Earth orbit (GEO): The orbit around Earth matching Earth's sidereal rotation period. All geosynchronous orbits have a (semi-major axis) of 42,164 km (26,199 mi).[1]
* High Earth orbit: Geocentric orbits above the altitude of geosynchronous orbit 35,786 km (22,240 miles).
So, seeing all this I'd say 200 to 300 km is "orbit"
What do y'all think?