umbra - a region of complete shadow resulting from total obstruction of light
wordnetweb.princeton.edu/perl/webwn
Umbra - BIONICLE is a toy line by the LEGO Group marketed primarily at 6 to 16-year-olds. The toy line was launched in December 30, 1999 in Europe and ...
en.wikipedia.org/wiki/Umbra_(bionicle)
The Umbra is the spirit world, a shadow or reflection of the real world, in the old World of Darkness role-playing game setting. ...
en.wikipedia.org/wiki/Umbra_(World_of_Darkness)
Umbra is a sans-serif display typeface designed in 1935 by Robert Hunter Middleton. It is an adaptation of the uppercase set of his earlier typeface Tempo Light. ...
en.wikipedia.org/wiki/Umbra_(typeface)
The umbra, penumbra and antumbra are the names given to three distinct parts of a shadow, created by any light source. For a point source only the umbra is cast.
en.wikipedia.org/wiki/Umbra
Umbra - Shadow Lass is a fictional character, a comic book superheroine published by DC Comics. She first appeared in Adventure Comics vol. ...
en.wikipedia.org/wiki/Umbra_(comics)
umbra - A shadow; The central region of a sunspot
en.wiktionary.org/wiki/umbra
umbra - The area of total darkness in the shadow caused by an eclipse.
www.iceinspace.com.au/glossary.html
umbra - the darkest central portion of a shadow
http://www.landscapemodeling.org/htm...s/glossary.htm
umbra - In solar-terrestrial terms, the dark core or cores (umbrae) in a sunspot with penumbra, or a sunspot lacking penumbra.
www.nws.noaa.gov/glossary/index.php
umbra - a complete shadow (as of the Moon) within which the source of light (the Sun) is totally hidden from view.
www.earthview.com/resources/glossary.htm
umbra - The darker core of a shadow, usually cone shaped, and surrounded by a lighter penumbral shadow. Also refers to the darker center of sunspots. ...
home.hiwaay.net/~krcool/Astro/moon/moonpedia/
umbra - سایه sâyé (#) Fr.mbre Optics: A dark area, especially the blackest part of a shadow from which all light is cut off. → penumbra. ...
aramis2.obspm.fr/~heydari/dictionary/index.php
umbra - The area traced on a planet during an eclipse where the eclipsed light source is completely blocked. Observers in the umbral shadow of a solar ...
http://www.starrynighteducation.com/...ictionary.html
umbra - the darkest part of the shadow cast by a non-luminous body, where it completely obscures the light from a self-luminous body. ...
home.att.net/~tangents/tech/astroterm.htm