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Glite Dictionary
Alpha Crucis

Alpha Crucis

9.9
A very bright star at the bottom of the Southern Cross
  • noun
  • /ˈælfə ˈkruːsɪs/
  • Specialized
translation icon : Alpha Crucis
  • The Southern Hemisphere sky is dominated by Alpha Crucis, marking the base of the Southern Cross.

Examples

  • Sailors have long used Alpha Crucis for navigation in the southern oceans.

  • Many stargazers can easily spot Alpha Crucis due to its brightness at the foot of Crux.

  • Look at Alpha Crucis!

  • I saw Alpha Crucis shining brightly in the southern sky.

  • In the southern hemisphere, Alpha Crucis is easily recognizable as the brightest star in the constellation Crux.

  • Astronomers often refer to Alpha Crucis as Acrux, indicating its significance in navigation.

  • When stargazing, many people look for Alpha Crucis to help them identify the Southern Cross.

Surface Forms

Alpha Crucis singular
Alpha Crucis plural

Morphology

alpha + Crucis

The element 'alpha' conveys 'first/primary' and is commonly used in star names to mark the brightest member, so a learner who knows 'alpha' might infer this is a principal star. However, 'Crucis' is a Latin genitive form (not a familiar English word) and the Bayer naming convention is specialized knowledge, so the precise meaning ('brightest star in the constellation Crux') is not fully predictable for a B1 learner.

Etymology

Alpha Crucis gets its name from star naming: Alpha means the brightest and Crucis means 'of the cross', so the name paints a picture of the bright star at the bottom of the Southern Cross. Sailors and stargazers used that clear, bright point to find direction, so today Alpha Crucis is known as the brightest star that marks the 'Southern Cross'.