blood moon

[ bluhd moon ]

noun

1. a total lunar eclipse, during which a small amount of the sun’s light is refracted through the earth’s atmosphere, causing the blue wavelengths to scatter and allowing more of the red wavelengths to reach the moon.

Word History and Origins

Origin of blood moon¹

First recorded in 1870–75

Example Sentences

The October blood moon is the second of four that will happen over a 17-month period between April 2014 and September 2015.

From The Daily Beast

For about half an hour thus they proceeded, their way lighted by the lurid glow of the blood moon.

From Project Gutenberg