An Etymological Dictionary of Astronomy and Astrophysics
English-French-Persian

فرهنگ ریشه شناختی اخترشناسی-اخترفیزیک

M. Heydari-Malayeri    -    Paris Observatory

   Homepage   
   


A B C D E F G H I J K L M N O P Q R S T U V W X Y Z

<< < -ab aba abs abs abs acc acc act act ada adi adv afo agi Ale alg Alk Aln alr alt amb ana And ang ani ano ant ant ape apo app aps arc arg arm art ass ast ast asy atm ato aur aut axi > >>

Number of Results: 892
aurora australis
  اوشه‌ی ِ دشتری   
uše-ye daštari

Fr.: aurore australe   

The aurora in the Southern hemisphere, also called as Southern Lights.

aurora; → south.

aurora borealis
  اوشه‌ی ِ هودری   
uše-ye hudari

Fr.: aurore boréale   

The aurora in the Northern hemisphere, also called as Northern Lights.

aurora; → north.

auroral
  اوشه‌ای   
uše-yi

Fr.: auroral   

Pertaining to the → aurora phenomenon.

aurora; → -al.

auroral emission
  گسیل ِ اوشه‌ای   
gosil-e uše-yi

Fr.: émission aurorale   

The → electromagnetic radiation emitted in planetary atmospheres involving the → aurora phenomenon.

auroral; → emission.

auroral line
  خط ِ اوشه‌ای   
xatt-e uše-yi

Fr.: raie aurorale   

1) A prominent → forbidden line in the spectra of the aurora at wavelengths of 5577 and 6300 Å giving the aurora its characteristic green and red colors. Both are emitted by atomic oxygen, the former in its transition from the second lowest excited electronic state (1S) to the lowest excited electronic state (1D), the latter in its transition from the lowest excited electronic state (1D) to the atomic ground state (3P).
2) A forbidden line emitted by interstellar ionized gas by several atomic species (O, O+, O++, N+, S++, etc.) corresponding to the transition from the state 1S to 1D. → forbidden line; → nebular line; → transauroral line.

auroral; → line.

auroral zone
  زنار ِ اوشه‌ای   
zonâr-e uše-yi

Fr.: zone aurorale   

A roughly circular band around either geomagnetic pole above which there is a maximum of auroral activity. It lies about 10 to 15° of geomagnetic latitude from the geomagnetic poles.

auroral; → zone.

authenticate
  راستین‌شماردن   
râstin šomârdan

Fr.: authentifier   

1) To establish as genuine.
2) To prove beyond doubt the authorship or origin of (e.g. to authenticate a painting). → authentication.

From L.L. authenticus, from Gk. authentikos "original, primary, at first hand," from authent(es) "one who does things himself," from aut-, from autos "self, one's own," of unknown origin, + -hentes "doer" + -ikos, → ics.

Râstin "genuine, authentic," from râst "right, true; just, straight" (Mid.Pers. râst "true, straight, direct;" O.Pers. rāsta- "straight, true," rās- "to be right, straight, true;" Av. rāz- "to direct, put in line, set," razan- "order;" cf. Skt. raj- "to direct, stretch," rjuyant- "walking straight;" Gk. orektos "stretched out;" L. regere "to lead straight, guide, rule," p.p. rectus "right, straight;" Ger. recht; E. right; PIE base *reg- "move in a straight line," hence, "to direct, rule") + -in adj. suffix.
Šomârdan "to consider; to reckon, count, compute;" Mid.Pers. ôšmârtan, ôšmurtan "to reckon, calculate, enumerate, account for," from Av. base (š)mar- "to have in mind, remember, recall," pati-šmar- "to recall; to long for," hišmar-, cf. Skt. smar- "to remember, become aware," smarati "he remembers," L. memor, memoria, Gk. mermera "care," merimna "anxious thought, sorrow," martyr "witness."

authentication
  راستین‌شماری، راستین‌آزمایی   
râstinšomâri, râstin-âzmâyi

Fr.: authentification   

Computers: The process by which a user's identity is checked within the network to ensure that the user has access to the requested resources.

Verbal noun of → authenticate.

author
  داتار   
dâtâr

Fr.: auteur   

1) The writer of a book, article, or other text. One who practices writing as a profession.
2) An originator or creator, as of a theory or plan.
3) Author God.

M.E. auctour, from O.Fr. autor, from L. auctor, "creator, enlarger, founder, master, leader," literally "one who causes to grow," from auctus, p.p. of augere "to increase," from PIE root aug- "to increase".

Dâtâr, from Mid.Pers. dâtâr/dâdâr "creator," from Av. and O.Pers. dâtâr "creator," from dâ- "to create, make, appoint," Skt. dhatr "author, creator, preserver, bearer." The Mod.Pers. form of this word in classical literary works is dâdâr, used mainly as noun or adjective for "God, the creator."

authority
  داتارگان   
dâtârgân

Fr.: autorité   

1) The power to determine, adjudicate, or otherwise settle issues or disputes; jurisdiction; the right to control, command, or determine (Dictionary.com).
2) A person or body of persons in whom authority is vested, as a governmental agency (Dictionary.com).

author; → -ity.

Dâtârgân, from dâtâr, → author, + -gân, on the model of xodâygân "a great lord."

authorship
  داتاری   

Fr.: paternité   

1) The act, fact, or occupation of writing.
2) Source or origin, as of a book or idea.

author.

auto-, aut-
  خود-   
xod- (#)

Fr.: auto-, aut-   

Gk., from autos "self, one's own," of unknown origin.

Xod-, from xod "self," Av. hva- "self, own."

autocorrelation
  خودهم‌باز‌آنش   
xod-hambâzâneš

Fr.: autocorrélation   

1) In radio astronomy, a process performed by an → autocorrelator.
2) In statistics, a linear relation between values of a random variable over time.
3) In electronics, a technique used to detect cyclic activity in a complex signal.

Autocorrelation, from → auto- "self" + → correlation.

Xod-hambâzâneš, from xod- "self" + hambâzâneš, → correlation.

autocorrelation function
  کریا‌ی ِ خودهم‌باز‌آنش   
karyâ-ye xod-hambâzâneš

Fr.: fonction d'autocorrélation   

A mathematical function that describes the correlation between two values of the same variable at different points in time.

autocorrelation; → function.

autocorrelator
  خودهم‌باز‌آن‌گر   
xod-hambâzângar

Fr.: autocorrélateur   

In radio astronomy, a spectrograph which correlates the signal with itself with various time delays, and extracts the frequency spectrum of the signal. → correlator.

Autocorrelator, agent n. from → autocorrelate + → -or.

Xod-hambâzângar, agent n. from xod-, → auto-, + hambâzângar, → correlator.

autoguider
  خودراهبر، راهبر ِ خودکار   
xodrâhbar, râhbar-e xodkâr

Fr.: autoguideur   

An electronic equipment used to automatically guide a telescope during long exposures.

Autoguider from → auto- "self" + guider, from O.Fr. guider "to guide, lead, conduct," from Germanic origin; akin to O.E. wltan "to look after" witan "to know," akin to O.H.G. wizzan "to know," L. videre "to see," Gk. eidenai "to know," idein "to see," Av. vaêd- "to know," Skt. veda "knowledge; finding."

Xodrâhbar from xod-, → auto + râhbar "guide," from râh "way" + bar, from bordan "to lead."

autoguiding
  خودراهبرد، راهبرد خودکار   
xodrâhbord, râhbord-e xodkâr

Fr.: autoguidage   

The act or process of guiding a telescope automatically.

autoguider.

automatic
  خودکار   
xodkâr (#)

Fr.: automatique   

Having a self-acting or self-regulating mechanism.

From Gk. automatos "self-acting," from → auto- + matos "willing," from PIE *men- "to think;" compare with Av./O.Pers. man- "to think."

Xodkâr from xod-, → auto-, + kâr "acting, actor," from kardan "to do, act."

automatic photometric telescope
  دوربین ِ شیدسنجیک ِ خودکار، تلسکوپ ِ ~ ~   
durbin-e šidsanjik-e xodkâr, teleskop-e ~ ~

Fr.: télescope photométrique automatique   

A telescope developed to perform photometric observations automatically.

automatic; → photometric; → telescope.

automorphism
  خود-ریخت‌مندی   
xod-rixtmandi

Fr.: automorphisme   

An → isomorphism between an → object and itself.

auto-; → morphism.

<< < -ab aba abs abs abs acc acc act act ada adi adv afo agi Ale alg Alk Aln alr alt amb ana And ang ani ano ant ant ape apo app aps arc arg arm art ass ast ast asy atm ato aur aut axi > >>