411 REFERENCE · Wiktionary
HLX
Reference material by Wiktionary contributors. This retains its source identity and is not 411 news reporting.
hlx
English
Noun
en hyperluminous X-ray source; An astrophysical X-ray source more luminous that ultraluminous X-ray sources (ULXs).
Related terms
en ULX<t:ultra-luminous X-ray source> HLIRG<t:hyper-luminous infra-red galaxy>