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单词 betelgeuse
释义

Betelgeuse

enUK

Be·tel·geuse

B0214700 (bēt′l-jo͞oz′, bĕt′l-jœz′)n. A bright-red intrinsic variable star, 527 light years from Earth, in the constellation Orion.
[French Bételgeuse, ultimately from Arabic yad al-jawzā' : yad, hand; see yd in Semitic roots + al-, the + jawzā', Gemini (later also used for Orion) (perhaps from jawz, middle (Gemini perhaps originally being so called because it crossed the middle of the sky, and Orion later being so called because of the three bright stars in the middle of the constellation, forming Orion's belt) , from jāza, to pass through; see gwz in Semitic roots).]Word History: The history of the curious star name Betelgeuse is a good example of how scholarly errors can creep into language. The story starts with the pre-Islamic Arabic astronomers, who called the star yad al-jawzā', "hand of the jawzā'." The jawzā' was their name for the constellation Gemini. After Greek astronomy became known to the Arabs, the word came to be applied to the constellation Orion as well. Some centuries later, when scribes writing in Medieval Latin tried to render the word, they misread the y as a b (the two corresponding Arabic letters are very similar when used as the first letter in a word), leading to the Medieval Latin form Bedalgeuze. In the Renaissance, another set of scholars trying to figure out the name interpreted the first syllable bed- as being derived from a putative Arabic word *bāṭ meaning "armpit." This word did not exist; it would correctly have been ibṭ. Nonetheless, the error stuck, and the resultant etymologically "improved" spelling Betelgeuse was borrowed into French as Bételgeuse, whence English Betelgeuse.

Betelgeuse

(ˌbiːtəlˈdʒɜːz; ˈbiːtəlˌdʒɜːz) or

Betelgeux

n (Celestial Objects) a very remote luminous red supergiant, Alpha Orionis: the second brightest star in the constellation Orion. It is a variable star[C18: from French, from Arabic bīt al-jauzā' literally: shoulder of the giant, that is, of Orion]

Be•tel•geuse

or Be•tel•geux

(ˈbit lˌdʒuz, ˈbɛt lˌdʒœz)

n. a first-magnitude red supergiant in the constellation Orion. [1790–1800; < French < Arabic bīt al jauzā' shoulder of the giant (i.e., of Orion)]

Be·tel·geuse

(bēt′l-jo͞oz′) A reddish, very bright variable star in the constellation Orion. It is a supergiant. See Note at Rigel.
Thesaurus
Noun1.Betelgeuse - the second brightest star in OrionAlpha OrionisOrion, Hunter - a constellation on the equator to the east of Taurus; contains Betelgeuse and Rigel
Translations
Бетельгейзе

Betelgeuse

enUK

Betelgeuse

(bēt`əljo͞oz'), bright star in the constellation OrionOrion,
in astronomy, constellation located on the celestial equator. It is one of the most conspicuous and easily recognizable constellations in the entire sky. From ancient times it has been mentioned in the literature of many peoples and is traditionally depicted as the figure
..... Click the link for more information. ; Bayer designation α Orionis; 1992 position R.A. 5h54.8m, Dec. +7°24'. A red supergiant with a luminosity about 13,000 times that of the sun, it is of spectral classspectral class,
in astronomy, a classification of the stars by their spectrum and luminosity. In 1885, E. C. Pickering began the first extensive attempt to classify the stars spectroscopically.
..... Click the link for more information.  M2 Iab. Betelgeuse is a semiregular variable starvariable star,
star that varies, either periodically or irregularly, in the intensity of the light it emits. Other physical changes are usually correlated with the fluctuations in brightness, such as pulsations in size, ejection of matter, and changes in spectral type, color, or
..... Click the link for more information.  with apparent magnitudemagnitude,
in astronomy, measure of the brightness of a star or other celestial object. The stars cataloged by Ptolemy (2d cent. A.D.), all visible with the unaided eye, were ranked on a brightness scale such that the brightest stars were of 1st magnitude and the dimmest stars
..... Click the link for more information.  ranging from 0.06 to 0.75; thus, at maximum brightness it is one of the 10 brightest stars in the sky. Betelgeuse marks the right shoulder of Orion; its distance is about 500 light-years.

Betelgeuse

(bee -t'l-jooz) (α Ori) A remote luminous red supergiant that is the second-brightest star in the constellation Orion. It is a semiregular variable with a period of about 5.8 years; the normal magnitude range is 0.3 to 0.9 but the magnitude has reached 0.15 and been as low as 1.3. It is a strong source of infrared radiation. IRAS found that the long-wavelength infrared is emitted from three concentric shells, the largest with a radius of 1.5 parsecs, ejected within the past 100 000 years. Images of the surface of Betelgeuse have been produced by various interferometry techniques, and indicate a nonuniform brightness. Mv : –5.7; spectral type: M2 Iab; diameter: about 500 times solar diameter; distance: 150 pc.

Betelgeuse

[′bed·əl‚jüs] (astronomy) An orange-red giant star of stellar magnitude 0.1-1.2, 650 light-years from the sun, spectral classification M2-Iab, in the constellation Orion; the star α Orionis.
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更新时间：2024/9/23 6:21:45