a galaxy emitting stronger radio waves than a normal galaxy
radio galaxy in American English
noun
a galaxy that emits much more strongly in the radio part of the spectrum than does a typical galaxy
Word origin
[1955–60]This word is first recorded in the period 1955–60. Other words that entered Englishat around the same time include: life-support, new wave, opioid, rollout, software
Examples of 'radio galaxy' in a sentence
radio galaxy
It revealed a menagerie of extraordinary objects hitherto invisible: quasars, pulsars and radio galaxies.