Halo

Halo (Greek ἅλως halos, halo ') stands for

Halo ( light effect), atmospheric lighting effect
Halo ( astronomy), the area of a galaxy
Halo ( series of games ), video game series ( Halo: Combat Evolved, Halo 2, Halo 3, Halo 3: ODST, Halo Wars, Halo Reach and Halo 4 as well as a novel and comic series )
Halo (song), a song by Beyoncé Knowles (2009)
Halo ( image processing), unwanted effect in image editing
Halo (linguistics), belongs to that effect for the term field, the term scope of a word
Halo ( Planetary Geology ), especially the albedo corresponding surface changes in the area of impact craters
Halo ( Young), novel by the British writer Zizou Corder
Halo ( Adornetto ), novel by Alexandra Adornetto
Halo, NATO reporting name for the transport helicopter Mil Mi -26

In the broader sense of

Halo effect, error of assessment or perception effect (psychology, sociology, marketing and observational research )
Halo nucleus, atomic nuclei far from the nuclear core with remote nucleons

The abbreviation stands for HALO

HALO ( parachuting ), parachute jump from a height, wherein the opening of the screen takes place at low altitude
High Altitude and Long Range Research Aircraft, high flying research aircraft of the German Aerospace Center DLR Aerospace