What is "umbra"

Penumbra \Pe*num"bra\, n. [NL., fr. L. paene almost + umbra shade.]

1. An incomplete or partial shadow.

2. (Astron.) The shadow cast, in an eclipse, where the light is partly, but not wholly, cut off by the intervening body; the space of partial illumination between the umbra, or perfect shadow, on all sides, and the full light.
   --Sir I. Newton.

   Note: The faint shade surrounding the dark central portion of a solar spot is also called the penumbra, and sometimes umbra.

3. (Paint.) The part of a picture where the shade imperceptibly blends with the light.

Ombre \Om"bre\, n. [F., of uncertain origin.] (Zo["o]l.) A large Mediterranean food fish ( Umbrina cirrhosa): -- called also umbra, and umbrine.

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 in English, from a secondary sense among the Romans. Related: Umbral.

n. 1 A shadow. 2 (context astronomy English) The central region of a sunspot.

1. n. a region of complete shadow resulting from total obstruction of light

2. [also: umbrae (pl)]

The Umbra is the spirit world, a shadow or reflection of the real world, in the World of Darkness role-playing game setting. It is inhabited by spirits, gods, ghosts, and various other supernatural beings. The Umbra can broadly be thought of as all realms that exist beyond the mundane terrestrial existence of Earth. Rather than existing as a single universe, the Umbra embraces many versions of reality, forming a multiverse of realms that operate by their own laws. Mages and werewolves refer to this multiverse as the Tellurian, and are the two populations most likely to travel to the Umbra. Other beings, such as wraiths, are permanent inhabitants and have considerable difficulty interacting with the day-to-day reality of Earth (hereafter simply referred to as 'reality' for brevity's sake).

Umbra was a collective of young black writers based in Manhattan's Lower East Side that was founded in 1962.

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 solely by its black dimensional shadow.

Category:Display typefaces Category:1935 introductions Category:Letterpress typefaces Category:Typefaces designed by R. Hunter Middleton

Umbra is the Latin word for shadow

• in mythology, it refers to the "shades" of the dead, see shade (mythology)
• in astronomy, umbra refers to the shadow cast by a celestial body.

As a proper name, Umbra may refer to:

• A genus of freshwater fishes of the family Umbridae, of the order Esociformes, commonly known as the mudminnows
• Umbra (typeface), an American typeface designed by R. Hunter Middleton
• Umbra (company), a Toronto-based designer and manufacturer of houseware
• Umbra, the circular dark region of a sunspot that is surrounded by the semi-bright penumbra
• Umbra (comics), a member of the Legion of Super-Heroes
• Umbra (World of Darkness), realms within the role-playing game World of Darkness
• Umbra Software, a video game middleware company
• A member of the Order of Mata Nui (Umbra) in the LEGO Bionicle storyline
• The primary antagonist in the animated series, Mighty Orbots
• Umbra Witches, Order of Witches in the video game Bayonetta
• Umbra, a sphere-like creature in Warhammer 40,000
• Umbra poets, a collective of young Black writers, formed in Manhattan's East Side in 1962; publishers of Umbra Magazine
• Umbra, a sword and multiple characters in The Elder Scrolls series of role-playing games
• Queen Umbra is the main antagonist in Child of Light

Umbra is the second studio album from Japanese electronica/ rock duo Boom Boom Satellites, released on February 7, 2001.

Umbra is a Toronto-based designer and manufacturer of houseware. (The name umbra means shade in Latin). The company was founded by two childhood friends in 1979. The company now sells more than 2,000 home products, sold through 25,000 retailers in 75 countries. The company's products are recognized by a stylized "U" printed on each item.

Umbra is a genus of mudminnows native to Europe and North America.

Umbra is a graphics software technology company founded 2007 in Helsinki, Finland. Umbra specializes in occlusion culling, visibility solution technology and provides middleware for video games running on Windows, Linux, PlayStation 4, Xbox One, PlayStation 3, Xbox 360, handheld consoles, iOS, Wii U and other platforms.

Umbra provides the occlusion culling system for Unity game engine since Unity 3 release.

Umbra is also available as a plug-in for Unreal Engine 3 and 4.

Umbra’s technology is being used in many major video games such as Batman: Arkham Knight, Call of Duty: Ghosts, The Witcher 3: Wild Hunt, Destiny, Until Dawn, Killzone Shadow Fall, Mass Effect 2, Mass Effect 3, Guild Wars 2, RaiderZ, The Secret World, Lord of the Rings Online, Planetside 2, Alan Wake, Age of Conan: Hyborian Adventures, Grandia Online, EVE Online, Free Realms and Dragon Age Origins & Dragon Age II.

Umbra's technology has been licensed for use in video games by Bungie, Guerrilla Games, CD Projekt RED, Microsoft Game Studios, Team Dakota, Neversoft, Infinity Ward, Shanda Games, Vicarious Visions, Specular Interactive, Remedy, Red Duck Inc., Splash Damage, Softmax and several others.