noun, plural lu·ci·dae [loo-si-dee] /ˈlu sɪˌdi/. Astronomy.
Origin of lucida
Examples from the Web for lucida
One of the ancient constellations, of which the lucida is the well-known nautical star Betelgeuze.
The lucida of Orion, α Orionis, and a standard Greenwich star of the first magnitude.
The lucida of Taurus, the well-known nautical star, popularly called Bull's-eye.
The stars γ and β are pointer stars to a fifth-magnitude star the lucida of the asterism Lacerta, the lizard about 15° from β.A Field Book of the Stars|William Tyler Olcott
One of the ancient southern constellations, the lucida of which is Fomalhaut.