When a fixture can be mounted in several ways, note that in the "additional mounting" section. If a fixture can be mounted with different number of heads, note that in the "eLumit notes" field.
Multiple mountings available.
Fixture is designed to attach mechanically and electrically to a proprietary low voltage cable or rail system. (Looks like track, but isn't). If there is a separate power cable, then it is suspended.
Fixture is provided with a clamp to allow mounting to pipe, truss, and other structure (typically with fastener of some kind).
Fixture is provided with its own stand, base, legs or other mounting hardware and is intended for mounting to horizontal, relatively flat surfaces such as tabletop, floor, ground, etc. (Not actually attached to the floor)
Fixture is designed for installation below grade. Also referred to as in-grade and burial.
Fixture is mounted to canopy or j-box cover that provides mechanical and electrical connection for one fixture.
Fixture is mounted to a pole using a stanchion, slipfitter, arm, etc. Also referred to as post-top.
Fixture is mounted within a ceiling, wall or floor so that the aperture is flush with the mounting surface.
In order to qualify as semi-recessed, part of the housing (guts) must come out of the wall/grade. Trim does not count.
Regarding in-ground fixtures, if a significant portion is in the ground (ie ballast or more than just housing) then the fixture is semi-recessed. If entire fixture, minus trim, is below grade, the fixture is in ground mounted.
Fixture is mounted such that the entire fixture is seemingly visible and external to the mounting surface. (More general mounting description, ceiling, walls, floors etc.) Fixtures with elements recessed into the ceiling may still be considered surface mount if fixture appears to be surface mounted entirely. example: http://www.amerlux.com/download/127_lit_0175_im_sm_t4.pdf Imperia surface mount T4.
Fixture is hung by various means from a ceiling or other structure. Also referred to as pendant, stem or chain.
Fixture is mechanically and electrically connected to a proprietary lighting track. The track itself may be recessed or surface-mounted.
Fixture is mounted such that the entire fixture housing is external to the wall. Fixtures designated as wall-mounted are not appropriate for ceiling, floor, or other surface mounting.