Triangulum Australe

noun Triangulum Au·stra·le \ -ȯ-ˈstrā-lē \

Definition of Triangulum Australe

astronomy
: a small southern constellation that is visible between the constellations of Norma and Apus and that is represented by the figure of an equilateral triangle
  • There are two recognized “triangles” among the constellations. The constellation Triangulum is a rather obscure pattern of stars located south of the constellation Andromeda currently in our northeastern morning sky, whereas Triangulum Australe, the Southern Triangle, is a larger and brighter grouping located below our southern horizon but visible south of Scorpius from more southerly latitudes.
  • —Alan HaleRuidoso (New Mexico) News21 June 2007

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First Known Use of triangulum australe

1675


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