Roget's 21st Century Thesaurus, Third Edition Copyright © 2013 by the Philip Lief Group.

EXAMPLES FROM THE WEB FOR UMBRAL

Outside the umbral cone is that of the penumbra, within which the sun is partially hidden by the moon.

WORD ORIGIN

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.

MORE RELATED WORDS FOR UMBRAL

Roget's 21st Century Thesaurus, Third Edition Copyright © 2013 by the Philip Lief Group.