umbra
ˈəmbrə-
(n)
umbra
a region of complete shadow resulting from total obstruction of light
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Umbra
(Zoöl) Any one of several species of sciænoid food fishes of the genus Umbrina, especially the Mediterranean species (Umbrina cirrhosa), which is highly esteemed as a market fish; -- called also ombre, and umbrine. -
Umbra
(Astron) The central dark portion, or nucleus, of a sun spot. -
Umbra
(Astron) 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. -
Umbra
(Astron) The fainter part of a sun spot; -- now more commonly called penumbra.
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(n)
umbra
A shadow or shade. Specifically, in astronomy: The total shadow of the earth or moon in an eclipse; the dark cone projected from a planet or satellite on the side opposite to the sun. See penumbra (with cut). -
(n)
umbra
Among the Romans, one who went to a feast merely at the solicitation of one invited: so called because he followed the guest as a shadow. -
(n)
umbra
In algebra, a symbol which, when paired with another, makes the symbol of a quantity. See umbral notation, under umbral. -
(n)
umbra
The only genus of Umbridæ; the mud-minnows. See minnow. 2 , and Umbridæ. There are two species, respectively of Europe and North America, U. krameri and U. limi. -
(n)
umbra
[lowercase] A sciænoid fish, Umbrina cirrosa; the umbrine. See cut under Umbrina.
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(n)
Umbra
um′bra a shadow: -
(n)
Umbra
um′bra (astron.) the dark cone projected from a planet or satellite on the side opposite to the sun: an uninvited guest whom an invited one brings with him: one of the Umbridæ, the mud-minnows: a sciænoid fish, the umbrine
Webster's Revised Unabridged Dictionary L., a shadow
Chambers's Twentieth Century Dictionary L.
A solar eclipse showing the moon's shadow on Earth, including the penumbra (large gray oval) and the umbra (black dot). usatoday.com
Conductor Robert Spano to premiere young composer's 'Umbra' this weekend. brooklynpaper.com
Les Mandelbaum, co-founder and president of Umbra, was presented with a 2012 Governor's Honorary Bachelor Degree in Applied Science from Toronto's Humber College. hometextilestoday.com
Notable deaths in arts, A to M. Umbra 's high design in suburban industrial park: Hume. thestar.com
Umbra recently announced the winners of the 7th Annual Umbra Pratt Design Competition, with first prize going to Pratt industrial design student Jeff Rubio, whose blog I've been following for the past several months. blog.howdesign.com
Les Mandelbaum and Paul Rowan are marking the 30th anniversary of Umbra , the company they founded with a simple window shade. hfnmag.com
TORONTO– Umbra has named Matt Carr as director of design, a newly created position in which he will oversee a global design department based here. hfnmag.com
Carr has spent the past seven years with Umbra , becoming one of the company's creative leads in 2006. hfnmag.com
Ars Magna Lucis et Umbrae by Athanasius Kircher Rome, 1646. nybooks.com
We now define an umbra M whose relation to the Hermite polynomials will be described in the next section.
A triple lacunary generating function for Hermite polynomials
The analysis of high-resolution Doppergrams and continuum images of sunspot umbrae by Bharti et al. (2007a) show that the umbral dots are surrounded by downwflows.
Structures in compressible magnetoconvection and the nature of umbral dots
Indeed, case G represents a vertical magnetic field strenght of about 3 kG in physical units, just in the range expected for sunspot umbrae.
Structures in compressible magnetoconvection and the nature of umbral dots
The position of umbra/penumbra and penumbra/quiet sun boundary are taken as 0 and 1, respectively.
The properties of penumbral microjets inclination
In this paper we aim to study the energy balance in a sunspot umbra.
Magneto-acoustic wave energy from numerical simulations of an observed sunspot umbra
To him he flies, and bows, and bows again, Then, close as Umbra, joins the dirty train. "Essay on Man Moral Essays and Satires" by
There had been a spell upon him; the 'Romani nominis umbra. "The Roman and the Teuton A Series of Lectures delivered before the University of Cambridge" by
Alas, 'pulvis et umbra sumus! "My Novel, Complete" by
They looked up into serene spaces, and forgot the umbra of pestilence. "Dragon's blood" by
For the "Romani nominis umbra," the shadow of the mighty race whom they had conquered, lay heavy on our forefathers for centuries. "Scientific Essays and Lectures" by
Solus hic est sapiens alii volitant velut umbrae. "The Anatomy of Melancholy" by
Hammond is like the Umbra you were reading about the other day in Lord Lytton's "Last Days of Pompeii,"' she said to Mary. "Phantom Fortune, A Novel" by
Cras forsan fies, pulvis et umbra levis, Quid tibi opes prosunt? "The Mirror of Literature, Amusement, and Instruction" by
Pulvis et Umbra, 130. "Modern English Books of Power" by
The principal works published by Bruno during his stay in Paris are "Il Candelajo" and "Umbrae Idearum. "The Heroic Enthusiasts,(1 of 2) (Gli Eroici Furori)" by
Los olivos palidecen.
Cantan las flautas de umbría
y el liso gong de la nieve.
Cu ochii mari si purtatori de pace?
Resai din umbra vremilor incoace
Ca sa te vad venid ... ca 'n vis, asa vii!