Look up: umbra

1. Umbra
   HMS Umbra was a British Ursula Class submarine of 540 tons displacement launched in the early 1940s. She was armed with one small gun and six 21-inch torpedo tubes in the bow. She had a top speed of 11.25 knots surfaced and 10 knots submerged and carried a complement of 27.
   Found on http://www.probertencyclopaedia.com/brow
   
   
2. Umbra
   Umbra is a cultivated variety of potato.
   Found on http://www.probertencyclopaedia.com/brow
   
   
3. Umbra
   (Phytolacca) This group consists of hardy and tender perennials. They are found wild in North and South America, Asia and Africa. Very few kinds are in cultivation. P. dioica, the Umbra, is a quick growing tree that is grown for decoration in mild climates. It is an evergreen and grows up to 60 feet...
   Found on http://www.botany.com/phytolacca.html
   
   
4. umbra
   The dark central region of a sunspot.
   Found on http://www.solarviews.com/eng/terms.htm
   
   
5. umbra
   Latin, meaning: shade, shadow.
   Found on http://archives.nd.edu/uuu.htm
   
   
6. Umbra
   The dark core or cores (umbrae) in a SUNSPOT with PENUMBRA, or a sunspot lacking penumbra.
   Found on http://www.encyclo.co.uk/visitor-contrib
   
   
7. umbra
   [n] - a region of complete shadow resulting from total obstruction of light
   Found on http://www.webdictionary.co.uk/definitio
   
   
8. Umbra
   (1). The darkest part of the shadow cast by Earth into space. (2). The darker portion of a sunspot.
   Found on http://www.delscope.demon.co.uk/astronom
   
   
9. Umbra
   From the Latin for shade, it is the shadow area defining a total eclipse. or the dark central region of a sunspot.
   Found on http://www.encyclo.co.uk/visitor-contrib
   
   
10. Umbra
    The darkest part of a shadow where no light from the source reaches.
    Found on http://www.diracdelta.co.uk/science/sour
    
    
11. umbra
    Origin: L, a shadow. ... 1. <astronomy> The conical shadow projected from a planet or satellite, on the side opposite to the sun, within which a spectator could see no portion of the sun's disk; used in contradistinction from penumbra. See Penumbra. The central dark portion, or nucleus, of a s...
    Found on http://www.mondofacto.com/facts/dictiona
    
    
12. umbra
    noun a region of complete shadow resulting from total obstruction of light
    Found on http://wordnetweb.princeton.edu/perl/web
    
    
13. umbra
    (um´brә) the part of a shadow in which there is no light from any light source. a sharp appearance to the edges of a structure on a radiograph.
    Found on http://www.encyclo.co.uk/local/21001
    
    
14. Umbra
    • (n.) The conical shadow projected from a planet or satellite, on the side opposite to the sun, within which a spectator could see no portion of the sun`s disk; -- used in contradistinction from penumbra. See Penumbra. • (n.) The fainter part of a sun spot; -- now more commonly called pen...
    Found on http://thinkexist.com/dictionary/meaning
    
    
15. umbra
    (from the article `Sun`)
    Found on http://www.britannica.com/eb/a-z/u/5
    
    
16. umbra
    that part of a shadow in which all light from a given source is excluded. The shadow from a point source of illumination is essentially all umbra, ... [1 related articles]
    Found on http://www.britannica.com/eb/a-z/u/5
    
    
17. umbra
    umbra (s), umbrae (pl) 1. A dark area, especially the blackest part of a shadow caused by light from all points of a source being prevented from reaching the area, usually by an opaque object. 2. In astronomy, the shadow region over an area of the earth where a solar eclipse is total. 3. The darkest region of a sunspot. 4. A shade; su...
    Found on http://www.wordinfo.info/words/index/inf
    
    
18. Umbra
    Umbra is Latin for shadow.
    Found on http://www.probertencyclopaedia.com/YS.H
    
    
19. umbra
    umbra: see eclipse; sunspots.
    Found on http://www.infoplease.com/ce6/sci/A09198
    
    
20. Umbra
    Umbra is the astrological term for the shadow cast by a planet or satellite.
    Found on http://www.probertencyclopaedia.com/brow
    
    
21. umbra
    Central region of a shadow that is totally dark because no light reaches it, and from which no part of the light source can be seen (compare penumbra). In astronomy, it is a region of the Earth from which a complete eclipse of the Sun can be seen
    Found on http://www.talktalk.co.uk/reference/ency
    
    
22. umbra
    the darker, smaller shadow cast by the Moon during a total solar eclipse.
    Found on http://www.kidseclipse.com/pages/glossar
    
    
23. Umbra
    The name given to the shadow cast by a celestial object that entirely blocks out illumination.
    Found on http://www.moonconnection.com/moon-gloss
    
    
24. Umbra
    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. These names are most often used to refer to the shadows cast by celestial bodies. Umbra : The umbra (Latin for "shadow") i...
    Found on http://en.wikipedia.org/wiki/Umbra
    
    
25. Umbra
    (typeface) `Umbra` is a sans-serif display typeface designed in 1935 by R. Hunter Middleton. It is an adaptation of the uppercase set of his earlier typeface Tempo Light. The name Umbra refers to its shadow effect, in which the actual letter shape consists of negative space and is defined sol...
    Found on http://en.wikipedia.org/wiki/Umbra