noun, plural um·bras, um·brae [uhm-bree] /ˈʌm bri/.
- umbrella bird
Origin of umbra
Examples from the Web for umbra
From the fact that the spectrum is darkened we learn that there is considerable general absorption of light in the umbra.The Story of the Heavens|Robert Stawell Ball
The double of the Egyptian sepulchral records corresponds exactly to the of the Greeks and the umbra of the Latins.A history of art in ancient Egypt, Vol. I (of 2)|Georges Perrot
Sed nos veri iuris germanaeque iustitiae solidam et expressam effigiem nullam tenemus, umbra et imaginibus utimur.De Officiis|Marcus Tullius Cicero
Within the umbra there is sometimes seen a still darker spot, called the nucleus.The Astronomy of Milton's 'Paradise Lost'|Thomas Orchard
Each spot is quite sharply divided into an umbra and a penumbra.Astronomy for Young Folks|Isabel Martin Lewis
noun plural -brae (-briː) or -bras
Word Origin for umbra
1590s, "phantom, ghost," a figurative use from Latin umbra "shade, shadow" (see umbrage). Astronomical sense of "shadow cast by the earth or moon during an eclipse" is first recorded 1670s. Meaning "an uninvited guest accompanying an invited one" is from 1690s.