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HORIZON
| Pronunciation (US): |  | (GB): | |
I. (noun)
Sense 1
Meaning:
The range of interest or activity that can be anticipated
Example:
It is beyond the horizon of present knowledge
Synonyms:
Classified under:
Nouns denoting attributes of people and objects
Hypernyms ("horizon" is a kind of...):
ambit; compass; orbit; range; reach; scope (an area in which something acts or operates or has power or control:)
Sense 2
Meaning:
The line at which the sky and Earth appear to meet
Synonyms:
apparent horizon; horizon; sensible horizon; skyline; visible horizon
Classified under:
Nouns denoting spatial position
Hypernyms ("horizon" is a kind of...):
line (a spatial location defined by a real or imaginary unidimensional extent)
Holonyms ("horizon" is a part of...):
linear perspective; perspective (the appearance of things relative to one another as determined by their distance from the viewer)
Sense 3
Meaning:
The great circle on the celestial sphere whose plane passes through the sensible horizon and the center of the Earth
Synonyms:
celestial horizon; horizon
Classified under:
Nouns denoting spatial position
Hypernyms ("horizon" is a kind of...):
great circle (a circular line on the surface of a sphere formed by intersecting it with a plane passing through the center)
Sense 4
Meaning:
A specific layer or stratum of soil or subsoil in a vertical cross section of land
Classified under:
Nouns denoting spatial position
Hypernyms ("horizon" is a kind of...):
stratum (one of several parallel layers of material arranged one on top of another (such as a layer of tissue or cells in an organism or a layer of sedimentary rock))
Hyponyms (each of the following is a kind of "horizon"):
soil horizon (a layer in a soil profile)
geological horizon (a layer of rock with a particular composition (especially of fossils); for dating the stratum)
Holonyms ("horizon" is a part of...):
profile (a vertical section of the Earth's crust showing the different horizons or layers)
Context examples:
Parallel to or in the plane of the horizon.
(Horizontal, NCI Thesaurus)
His tale had occupied the whole day, and the sun was upon the verge of the horizon when he departed.
(Frankenstein, by Mary Wollstonecraft Shelley)
Black holes also have a boundary, called an event horizon.
(Astronomers Piece Together First Image of Black Hole, The Titi Tudorancea Bulletin)
The sun was yet an hour and half above the horizon.
(Mansfield Park, by Jane Austen)
The sub-species of the human race to which you unfortunately belong has always been below my mental horizon.
(The Lost World, by Sir Arthur Conan Doyle)
The Event Horizon Telescope (EHT) unveiled the first-ever image of a black hole's event horizon, the area beyond which light cannot escape the immense gravity of the black hole.
(The Giant Galaxy Around the Giant Black Hole, NASA)
Anything that comes within a black hole's "event horizon," its point of no return, will be consumed, never to re-emerge, because of the black hole's unimaginably strong gravity.
(Black Hole Image Makes History, NASA)
Personally I am in agreement with Dr. Armstrong, and football does not come within my horizon.
(The Return of Sherlock Holmes, by Sir Arthur Conan Doyle)
“In the Speedy,” said Cochrane, “the sailcloth was so thin that, when I made my observation, I always took my meridian through the foretopsail and my horizon through the foresail.”
(Rodney Stone, by Sir Arthur Conan Doyle)
This particular energy range offers astronomers a detailed look at what is happening near the event horizon, the region around a black hole from which light can no longer escape gravity's grasp.
(NuSTAR sees rare blurring of black hole light, NASA)
