(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 central dark portion, or nucleus, of a sun spot.
(n.) The fainter part of a sun spot; -- now more commonly called penumbra.
(n.) Any one of several species of sciaenoid food fishes of the genus Umbrina, especially the Mediterranean species (U. cirrhosa), which is highly esteemed as a market fish; -- called also ombre, and umbrine.
Example Sentences:
(1) If the entire cross-section is blocked, the point will be in the umbra of the shadow; if only a portion of the light is blocked, the point will be in the penumbra of the shadow.
(2) The frequency of chromosome aberrations was measured in cultured Umbra limi heart (U1-H) and Chinese hamster ovary (CHO) cells following exposure to the polycyclic aromatic hydrocarbons (PAH) 3,4-benzopyrene (BP), 1,2,5,6-dibenzanthracene (DBA), 1,2-benzanthracene (BA), and pyrene (PY), activated using S9 prepared from rainbow trout liver.
(3) While within the penumbra, some direct sunlight falls on the Moon but little darkening of the disc will be noticed until a few minutes before the Moon begins to enter the umbra at 19:23.
(4) On that occasion, the Moon traversed the northern part of the umbra and its southern regions, which just missed the shadow's core, are relatively dark.
(5) A typical spot has a central dark umbra, surrounded by a lighter penumbra.
(6) Due to the very limited amount of knowledge available on the cytochemistry and architecture of fish chromosomes, an extensive banding study was carried out on chromosomes of the central mudminnow, Umbra limi.
(7) The mudminnow, Umbra pygmaea, was chosen for this study, because of its ideal karyotype of 22 large chromosomes.
(8) Artificial "calculus", consisting of a mixture of shellac, umbra, pumice and plaster dissolved in ethanol, was painted on the root surfaces.
(9) The Moon stands over the southern Indian Ocean as it passes through the central dark umbra of the Earth's shadow, plunging deeper into the shadow than during any eclipse since 2000.
(10) It was concluded that the chromosomes of Umbra limi displayed typical responses to low level radiation exposure and that this fish would be an ideal cytogenetics model for this study of induced chromosome aberrations in fishes.
(11) The Moon's W limb has withdrawn from the umbra by 23:02 and finally exits the penumbra at 00:01.
(12) Totality, with the Moon entirely within the umbra, lasts from 20:22 until 22:03 with mid eclipse at 21:13.
(13) An in vivo system for the detection of sister chromatid exchange (SCE) in the central mudminnow, Umbra limi, is presented.
(14) A parasite of Plica plica in Guyana, previously called P. cnemidophori, is designated P. guyannense, while identification of Plica umbra parasites as P. tropiduri is corrected to P. vacuolatum and Fallisia simplex.
(15) The umbra is not illuminated evenly, though, since less of this indirect light penetrates to its core and the amount reaching different zones of the umbra is affected by varying atmospheric conditions.
(16) nov. from Plica umbra of Guyana; P. minasense tegui subsp.
(17) In the second type, motor activity was observed at any time; this type of periodism was typical of the dogfish Squalus acanthias and the hunchback Sciaena umbra.
(18) The central mudminnow, Umbra limi, was chosen fro this study because of its ideal karyotype consisting of 22 large meta- and submetacentric chromosomes.
(19) Observers in SE England may just glimpse the end of totality, but most of us may see nothing until it begins to emerge from the umbra.
(20) Mudminnows (Umbra pygmaea) and gar (Lepisosteus platyrhincus) were quite tolerant of exposure to acidic waters.
Umbrae
Definition:
(pl. ) of Umbra
Example Sentences:
(1) If the entire cross-section is blocked, the point will be in the umbra of the shadow; if only a portion of the light is blocked, the point will be in the penumbra of the shadow.
(2) The frequency of chromosome aberrations was measured in cultured Umbra limi heart (U1-H) and Chinese hamster ovary (CHO) cells following exposure to the polycyclic aromatic hydrocarbons (PAH) 3,4-benzopyrene (BP), 1,2,5,6-dibenzanthracene (DBA), 1,2-benzanthracene (BA), and pyrene (PY), activated using S9 prepared from rainbow trout liver.
(3) While within the penumbra, some direct sunlight falls on the Moon but little darkening of the disc will be noticed until a few minutes before the Moon begins to enter the umbra at 19:23.
(4) On that occasion, the Moon traversed the northern part of the umbra and its southern regions, which just missed the shadow's core, are relatively dark.
(5) A typical spot has a central dark umbra, surrounded by a lighter penumbra.
(6) Due to the very limited amount of knowledge available on the cytochemistry and architecture of fish chromosomes, an extensive banding study was carried out on chromosomes of the central mudminnow, Umbra limi.
(7) The mudminnow, Umbra pygmaea, was chosen for this study, because of its ideal karyotype of 22 large chromosomes.
(8) Artificial "calculus", consisting of a mixture of shellac, umbra, pumice and plaster dissolved in ethanol, was painted on the root surfaces.
(9) The Moon stands over the southern Indian Ocean as it passes through the central dark umbra of the Earth's shadow, plunging deeper into the shadow than during any eclipse since 2000.
(10) It was concluded that the chromosomes of Umbra limi displayed typical responses to low level radiation exposure and that this fish would be an ideal cytogenetics model for this study of induced chromosome aberrations in fishes.
(11) The Moon's W limb has withdrawn from the umbra by 23:02 and finally exits the penumbra at 00:01.
(12) Totality, with the Moon entirely within the umbra, lasts from 20:22 until 22:03 with mid eclipse at 21:13.
(13) An in vivo system for the detection of sister chromatid exchange (SCE) in the central mudminnow, Umbra limi, is presented.
(14) A parasite of Plica plica in Guyana, previously called P. cnemidophori, is designated P. guyannense, while identification of Plica umbra parasites as P. tropiduri is corrected to P. vacuolatum and Fallisia simplex.
(15) The umbra is not illuminated evenly, though, since less of this indirect light penetrates to its core and the amount reaching different zones of the umbra is affected by varying atmospheric conditions.
(16) nov. from Plica umbra of Guyana; P. minasense tegui subsp.
(17) In the second type, motor activity was observed at any time; this type of periodism was typical of the dogfish Squalus acanthias and the hunchback Sciaena umbra.
(18) The central mudminnow, Umbra limi, was chosen fro this study because of its ideal karyotype consisting of 22 large meta- and submetacentric chromosomes.
(19) Observers in SE England may just glimpse the end of totality, but most of us may see nothing until it begins to emerge from the umbra.
(20) Mudminnows (Umbra pygmaea) and gar (Lepisosteus platyrhincus) were quite tolerant of exposure to acidic waters.