Definition of radiohalo in US English:

radiohalo

noun

  • = pleochroic halo.

Origin

1920s; earliest use found in Arthur Holmes (1890–1965), geologist and geophysicist. From radio- + halo, after German Radiohalo.

Pronunciation

radiohalo

/ˌreɪdɪəʊˈheɪləʊ/