Medical Dictionary
halo
noun ha·lo \ˈhā-(ˌ)lō\
plural halos or haloes
Medical Definition of HALO
1
: a circle of light appearing to surround a luminous body; especially : one seen as the result of the presence of glaucoma
2
: a differentiated zone surrounding a central object <the halo around a boil>
3
: the aura of glory, veneration, or sentiment surrounding an idealized person or thing
4
: an orthopedic device used to immobilize the head and neck (as to treat fracture of neck vertebrae) that consists of a metal band placed around the head and fastened to the skull usually with metal pins and that is attached by extensions to an inflexible vest—called also halo brace
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