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Meaning of "astronomical unit" in the English dictionary

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DICTIONARY
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PRONUNCIATION OF ASTRONOMICAL UNIT

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GRAMMATICAL CATEGORY OF ASTRONOMICAL UNIT

noun
adjective
verb
adverb
pronoun
preposition
conjunction
determiner
exclamation
Astronomical unit is a noun.
A noun is a type of word the meaning of which determines reality. Nouns provide the names for all things: people, objects, sensations, feelings, etc.

WHAT DOES ASTRONOMICAL UNIT MEAN IN ENGLISH?

astronomical unit

Astronomical unit

An astronomical unit is a unit of length, roughly the distance from the Earth to the Sun. However, that distance varies as the Earth orbits the Sun, from a maximum to a minimum and back again once a year. Originally, each distance was measured through observation, and the au was defined as their average, half the sum of the maximum and minimum, making the unit a kind of medium measure for Earth-to-Sun distance. It is now defined more precisely as 149597870700 metres. The astronomical unit is used primarily as a convenient yardstick for measuring distances within the Solar System. However, it is also a fundamental component in the definition of another critical unit of astronomical length, the parsec.

Definition of astronomical unit in the English dictionary

The definition of astronomical unit in the dictionary is a unit of distance used in astronomy equal to the mean distance between the earth and the sun. 1 astronomical unit is equivalent to 1.495 × 1011 metres or about 9.3 × 107 miles.

WORDS THAT BEGIN LIKE ASTRONOMICAL UNIT

astron.
astronaut
astronautic
astronautical
astronautically
astronautics
astronavigation
astronavigator
astronomer
Astronomer Royal
astronomic
astronomical
astronomical clock
astronomical telescope
astronomical twilight
astronomical year
astronomically
astronomise
astronomize
astronomy

WORDS THAT END LIKE ASTRONOMICAL UNIT

ambulatory care unit
base unit
bomb disposal unit
condominium unit
control unit
currency unit
display unit
disposal unit
family unit
garbage disposal unit
generating unit
graphical display unit
intensive care unit
medical unit
mobile police unit
monetary unit
processing unit
sealed unit
stock unit
storage unit
unit

Synonyms and antonyms of astronomical unit in the English dictionary of synonyms

SYNONYMS

Translation of «astronomical unit» into 25 languages

TRANSLATOR
online translator

TRANSLATION OF ASTRONOMICAL UNIT

Find out the translation of astronomical unit to 25 languages with our English multilingual translator.
The translations of astronomical unit from English to other languages presented in this section have been obtained through automatic statistical translation; where the essential translation unit is the word «astronomical unit» in English.

Translator English - Chinese

天文单位
1,325 millions of speakers

Translator English - Spanish

unidad astronómica
570 millions of speakers

English

astronomical unit
510 millions of speakers

Translator English - Hindi

खगोलीय इकाई
380 millions of speakers
ar

Translator English - Arabic

وحدة فلكية
280 millions of speakers

Translator English - Russian

астрономическая единица
278 millions of speakers

Translator English - Portuguese

unidade astronômica
270 millions of speakers

Translator English - Bengali

জ্যোতির্বিদ্যা ইউনিট
260 millions of speakers

Translator English - French

unité astronomique
220 millions of speakers

Translator English - Malay

Unit astronomi
190 millions of speakers

Translator English - German

astronomische Einheit
180 millions of speakers

Translator English - Japanese

天文単位
130 millions of speakers

Translator English - Korean

천문 단위
85 millions of speakers

Translator English - Javanese

Unit astronomi
85 millions of speakers
vi

Translator English - Vietnamese

đơn vị thiên văn
80 millions of speakers

Translator English - Tamil

வானியல் அலகு
75 millions of speakers

Translator English - Marathi

खगोलशास्त्रीय एकक
75 millions of speakers

Translator English - Turkish

Astronomik birimi
70 millions of speakers

Translator English - Italian

unità astronomica
65 millions of speakers

Translator English - Polish

jednostka astronomiczna
50 millions of speakers

Translator English - Ukrainian

астрономічна одиниця
40 millions of speakers

Translator English - Romanian

unitate astronomica
30 millions of speakers
el

Translator English - Greek

αστρονομική μονάδα
15 millions of speakers
af

Translator English - Afrikaans

astronomiese eenheid
14 millions of speakers
sv

Translator English - Swedish

astronomisk enhet
10 millions of speakers
no

Translator English - Norwegian

astronomisk enhet
5 millions of speakers

Trends of use of astronomical unit

TRENDS

TENDENCIES OF USE OF THE TERM «ASTRONOMICAL UNIT»

The term «astronomical unit» is normally little used and occupies the 130.258 position in our list of most widely used terms in the English dictionary.
0
100%
FREQUENCY
Little used
39
/100
The map shown above gives the frequency of use of the term «astronomical unit» in the different countries.
Principal search tendencies and common uses of astronomical unit
List of principal searches undertaken by users to access our English online dictionary and most widely used expressions with the word «astronomical unit».

FREQUENCY OF USE OF THE TERM «ASTRONOMICAL UNIT» OVER TIME

The graph expresses the annual evolution of the frequency of use of the word «astronomical unit» during the past 500 years. Its implementation is based on analysing how often the term «astronomical unit» appears in digitalised printed sources in English between the year 1500 and the present day.

Examples of use in the English literature, quotes and news about astronomical unit

EXAMPLES

10 ENGLISH BOOKS RELATING TO «ASTRONOMICAL UNIT»

Discover the use of astronomical unit in the following bibliographical selection. Books relating to astronomical unit and brief extracts from same to provide context of its use in English literature.
1
Early application of solar-electric propulsion to a ...
Current technology for solar-electric propulsion is used to assess the potential performance advantages of low-thrust propulsion for an out-of-the-ecliptic mission.
William C. Strack, Frank J. Hrack, United States. National Aeronautics and Space Administration, 1970
2
The Solar system ; an astronomical
AN ASTRONOMICAL UNIT A Work of Deduction Based on a Fundamental Hypothesis BY GEORGE ADAM, M. D. Author of "Electricity, the Chemistry of Ether." "Concepts of Electric Phenomena of Planetary Systems." "From Ether to the ...
George Adam, 1911
3
The Astronomical Almanac for the Year 2014
At the 2009 XXVII GA, Resolution B2 on “Current Best Estimates of Astronomical Constants”, was adopted, and this list of constants (modified by the re-definition of the astronomical unit) is tabulated in items 1 and 2 of pages K6-K7. Resolution  ...
Nautical Almanac Office (U S ), 2013
4
The Solar System an Astronomical Unit. A Work of Deduction ...
This is a reproduction of a book published before 1923.
George Adam, 2010
5
Using SI Units in Astronomy
Definition of the astronomical unit, version 3, AAO(2010) The Astronomical Almanac Online29 provides the following formal definition of the astronomical unit of length: The astronomical unit of length is that length (A) for which the Gaussian ...
Richard Dodd, 2011
6
Astronomical Almanac for the Year 2015 and Its Companion, ...
At the 2009 XXVII GA, Resolution B2 on “Current Best Estimates of Astronomical Constants”, was adopted, and this list Of constants (modified by the re-definition Of the astronomical unit) is tabulated in items 1 and 2 of pages K6-K7. Resolution  ...
Nautical Almanac Office (U S ), 2014
7
The international system of units (SI).
The astronomical unit of distance is the length of the radius of the unperturbed circular orbit of a body of negligible mass moving round the Sun with a sidereal angular velocity of 0.017 202 098 950 radian per day of 86 400 ephemeris seconds.
International Bureau of Weights and Measures, 1977
8
Astronomical Almanac for the Year 2009 and Its Companion, ...
The astronomical unit of time is a time interval of one day (D) of 86400 seconds. An interval of 36525 days is one Julian century. The astronomical unit of mass is the mass of the Sun (S). The astronomical unit of length is that length (A) for ...
‎2008
9
Transactions of the International Astronomical Union
The astronomical unit of time (day) is redefined in terms of the SI second, which was itself defined so as to be equal to the ephemeris second to within the error of the determination. Specifically it is the SI second at mean sea level. 1.
International Astronomical Union, Edith A. Müller, Arnost Jappel, 1977
10
Astronomical Almanac: 2011
2011 BERNAN ASSOC. Commission 52 on Relativity in Fundamental Astronomy (RIFA [22]) who are discussing issues related to the relativistic aspects of astronomical constants and their units, including the definition of the astronomical unit.
BERNAN ASSOC, 2010

10 NEWS ITEMS WHICH INCLUDE THE TERM «ASTRONOMICAL UNIT»

Find out what the national and international press are talking about and how the term astronomical unit is used in the context of the following news items.
1
Make binoculars ready: Venus and Jupiter conjunction on 30th June
One astronomical unit is about 150 million kilometers approximately. Venus and Jupiter both appear bright in Earth's sky because the cloud ... «DeshGujarat, Jun 15»
2
Will the New Horizons Answer the Question about Pluto's Real …
After 9 years of deep space probing, New Horizon has already reached 30 astronomical unit or AU from the Sun. Pluto's unknown surface will ... «Weekly Observer, Jun 15»
3
New Horizons ready for Pluto flyby into new frontier
“We're stretching the limit … there are no other spacecraft this far out, about 30 AU (astronomical unit) from the Sun,” says Williams. “We're ... «Orlando Sentinel, Jun 15»
4
Light Pollution
Today, when we in the Astronomical Unit host star parties at darker sites like Cachuma Lake, people up camping from Los Angeles sometimes ... «Santa Barbara Edhat, Jun 15»
5
Tommy Lasorda Asteroid To Travel Near Earth Today
That's an astronomical unit of length for all you non-astronomy buffs out there. The Lasorda Asteroid is actually 1.127 AUs from Earth, and ... «Lasorda's Lair, Jun 15»
6
Jimmy Westlake: Venus and Jupiter meet for spectacular conjunction
One astronomical unit is the average distance of the Earth from the sun, about 93 million miles, and is the unit used by astronomers to size up ... «Colorado Mountain College News, Jun 15»
7
Discovery of Multiple Ring-Like Gaps in a Protoplanetary Disk
Astronomical Unit (AU) is the average distance between Earth and Sun. It is approximately 150 million kilometers (93 million miles). «Space Fellowship, Jun 15»
8
How to Spot Asteroid Pallas in Binoculars and Telescopes This Week
One astronomical unit is the average distance between the Earth and the sun, about 93 million miles (150 million km). [Astronomy Gear Guide ... «Space.com, Jun 15»
9
NASA invites Earthlings to experience Pluto Time
But at 33 Astronomical Units from the Sun (where one Astronomical Unit is the Earth-Sun distance of 150 million km, or 93 million miles) during ... «Sen, Jun 15»
10
No, a kilometre-wide asteroid isn't 'skimming past' us today
Consider, instead, the span of distance between the Earth and the Sun - one astronomical unit or around 150 million kilometers - and at 7:25 ... «The Weather Network, May 15»

REFERENCE
« EDUCALINGO. Astronomical unit [online]. Available <https://educalingo.com/en/dic-en/astronomical-unit>. Apr 2024 ».
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