Definition of blazar in English:

blazar

Pronunciation /ˈblāˌzär/ /ˈbleɪˌzɑr/

noun

Astronomy
  • A type of quasar that is an intense, irregularly variable source of highly polarized light, thought to arise from a plasma jet pointing in the direction of the earth.

    • ‘at the blazar's heart is a supersized black hole with a mass millions to billions of times that of the sun’

Origin

1980s from blaze, on the pattern of quasar, with bl- echoing the name BL Lac object.