Definition of Southern Triangle in English:

Southern Triangle

noun

Astronomy
  • The constellation Triangulum Australe.

Origin

Late 16th century; earliest use found in Thomas Blundeville (fl. 1561), author and translator. From southern + triangle, after post-classical Latin Triangulum australe.

Pronunciation

Southern Triangle

/ˌsʌðn ˈtrʌɪaŋɡl//ˌsʌðn ˈtrʌɪəŋɡl/