English Explanatory Dictionary

Cygnus X-1

English dictionary entry

Meanings

name
  1. A placename.
  2. The first generally accepted and confirmed black hole. A black hole in a high-mass X-ray binary (HMXB) with a blue supergiant companion (HD 226868), located in the constellation Cygnus.
  3. The high-mass X-ray binary star system containing this black hole and blue supergiant star.

Word forms

Cygnus X-1

Etymology

From Cygnus + X + 1. From being the first discovered discrete astronomical X-ray source (an X-ray star) located in the constellation of Cygnus.

Synonyms

Cyg X-1

Derived words

Cyg X-1
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