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

فرهنگ ریشه شناختی اخترشناسی-اخترفیزیک

M. Heydari-Malayeri    -    Paris Observatory

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Number of Results: 950
ascending node
  گره ِ فرازشی   
gereh-e farâzeši

Fr.: nœud ascendant   

The point in an orbit where the orbiting body crosses a reference plane, such as the ecliptic or the celestial equator, going from south to north. The celestial longitude of the ascending node is one of the elements of the orbit. → descending node.

ascend; → -ing; → node.

ascension
  فرازش   
farâzeš

Fr.: ascension   

The act of ascending; ascent.

Verbal noun of → ascend; → -tion.

ASCII
  اسکی   
ASCII

Fr.: ASCII   

A standard code or protocol for displaying → characters as numbers. Each alphabetic, numeric, or special character is represented with a 7-bit binary number (a string of seven 0s or 1s). 128 possible characters are defined. For example, the ASCII code for uppercase C is 67 and for lowercase c is 99. Most computers use ASCII codes to represent text, which makes it possible to transfer data from one computer to another.

Short for American Standard Code for Information Interchange.

ash
  خاکستر   
xâkestar (#)

Fr.: cendre   

The powdery residue that remains after something is burnt. → ashen light.

M.E. a(i)sshe; O.E. asce, æsce; cf. Frisian esk, Dutch asch, O.N., O.H.G. aska, Ger. Asche; akin to Gk. azein "to dry up, parch," L. arere "be dry," → arid, Skt. asa- "ashes," PIE root *as- "to burn, glow."

Xâkestar, ultimately from Proto-Iranian *aika-âtar- literally "fire dust," from *aika- (Pers. xâk "dust, earth," → soil) + *ātar- (Pers. âzar, âtaš, → fire); cf. Malâyeri xâkesar, Qasrâni xâksar.

ashen light
  نور ِ خاکستری   
nur-e xâkestari (#)

Fr.: lumière cendrée   

The faint glow occasionally observed on the unlit area of Venus in its crescent phase. Its cause is not known with certainty, but it might result from bombardment of atmospheric atoms and molecules by energetic particles and radiation, as with terrestrial airglow.

ash; → light.

Asia
  آسیا   
Âsiyâ (#)

Fr.: Asie   

The largest of the world's continents (about 41,440,000 sq. km.), bounded by Europe and the Arctic, Pacific, and Indian oceans.

From L. Asia, from Gk. Asia, apparently first used by Herodotus (about 440 BC) in reference to Anatolia or to the Persian Empire, in contrast to Greece and Egypt. Of uncertain origin.

aspect
  نمود   
nemud (#)

Fr.: aspect   

The apparent position of a body in the Solar System relative to the Sun, as seen from Earth. The main aspects are conjunction, greatest elongation, opposition, and quadrature.

Aspect from L. aspectus "looking, view, appearance," p.p. of aspicere "to look at," from ad- "to" + specere "to look," cognate with Gk. skeptesthai "to examine, consider," Av. spas- "to watch, look," Skt. spaz "to see, behold, look at;" PIE *spek- "to observe, look".

Nemud from nemudan "to show, demonstrate, exhibit, appear"

Aspect experiment
  آزمایش ِ اسپه   
âzmâyeš-e Aspect

Fr.: expérience d'Aspect   

A series of experiments carried out in the early 1980s by Alain Aspect and his colleagues that showed the violation of → Bell's inequality. Accordingly, quantum phenomena cannot be described by the → hidden variable theories, contrarily to the → EPR paradox interpretation.

Alain Aspect (1947-); → experiment. Aspect et al., 1982, Physical Review Letters, Vol. 49, No. 25 and references therein.

asperity
  زفتی   
zafti

Fr.: aspérité   

1) Roughness or unevenness of surface.
2) Physics: A microscopic projection on a metal surface resulting from normal surface finishing processes.
3) Geology: A site on a → fault surface where the two sides are held together by an area of higher strength than the areas surrounding it. When the stress on the fault exceeds the strength of the asperity, the asperity fails as an → earthquake.

M.E. asperite, from O.Fr. asperité "difficulty, painful situation," from L. asperitas, from asper "rough, harsh," of unknown origin.

From zaft "thick, gross, rude," (Steingass, Dehxodâ), + noun suffix -i.

assembly
  همایش   
hamâyeš (#)

Fr.: assemblée   

A company of persons gathered for a common reason, as for deliberation, legislation, worship, or entertainment.
The act of assembling; the state of being assembled.

M.E. assemblee, from M.Fr., from O.Fr., from assembler "to gather together."

Hamâyeš, from ham- "together," → com- + âyeš "coming," from ây- present stem of âmadan "to come;" O.Pers. aitiy "goes;" Av. ay- "to go, to come," aēiti "goes;" cf. Skt. e- "to come near," eti "arrival;" Gk. eimi "I go," L. ire "to go, walk," eo "I go;" Tokharian AB i-; PIE *ei- "to go, to walk."

assign
  نشاردن   
nešârdan

Fr.: assigner   

1) To give or allocate; allot.
2) To give out or announce as a task.
3) To designate; name; specify (Dictionary.com).

M.E. assignen, from O.Fr. assiginer "assign; appoint legally; allot," from L. assignare "to mark out, to allot by sign," from → ad- "to" + signare "to make a sign," from signum "mark," → sign

Nešârdan, from neš, → sign, + nuance suffix -âr.

assignation
  نشارش   
nešâreš

Fr.: rendez-vous, attribution   

1) An appointment for a meeting.
2) The act of assigning; → assignment (Dictionary.com).

Verbal noun of → assign.

assignment
  نشارمان   
nešârmân

Fr.: mission, attribution, allocation, affectation   

1) An act of assigning; appointment.
2) Something assigned, as a particular task or duty.
3) A position of responsibility, post of duty, or the like, to which one is appointed (Dictionary.com).

Verbal noun of → assign.

associate
  ۱) آهزیدن؛ ۲) آهزیده شدن؛ ۳) آهزگار   
1) âhazidan; 2) âhazide šodan; 3) âhazgâr

Fr.: 1a) associer; 1b) s'associer; 2) associé; allié   

1) (v.tr.) To join or connect together; to bring together or into relationship in any of various intangible ways (as in memory or imagination). → dissociate.
2) (v.intr.) To come or be together as partners, friends, or join with other parts.
3) A person joined with another or others in business or at work; something that usually accompanies another thing.

M.E. associat "associated," from L. associatus, p.p. of associare "to unite," from ad- + sociare "to join," from socius "ally, companion" ("follower"); PIE base *sekw- "to follow."

Âhazidan, from â- prefix + hazidan "to associate, accompany, follow," from Av. hac-, hax- "to associate, follow, accompany" (hacenay- "getting together, association," haxay-, hašy-, haš- "friend"), hacaiti "follows;" hacā "from, out of;" O.Pers. hacā "from" (Mid.Pers. hâz- "to lead, guide," hac "from;" Mod.Pers. az "from"); PIE base *sekw- "to follow;" cf. Skt. sac- "to be associated or united with," sácate "accompanies, follows," sácā "with;" Gk. hepesthai "to follow;" L. sequi "to follow."
Âhazgâr, from âhaz- present stem of âhazidan + agent noun suffix -gâr, → -or, as in âmuzgâr, parhizgâr, sâzgâr, âmizgâr, sepuzgâr.

associated molecular cloud
  ابر ِ مولکولی ِ آهزیده   
abr-e molekuli-ye âhazidé

Fr.: nuage moléculaire associé   

A → molecular cloud that is physically or apparently related to a star formation region.

associate; → molecular; → cloud.

association
  آهزش؛ انجمن   
âhazeš; anjoman (#)

Fr.: association   

1) The act of associating, → associate; the state of being associated.
2) A group of → astronomical objects physically or apparently gathered in a particular area of sky, for example an → stellar association.
3) An organization of persons having a common interest. → dissociation.

Association, noun from → associate.

Âhazeš, verbal noun of → âhazidanassociate. Anjoman, for the meaning 3, from Mid.Pers. anjaman, from Av. han-jamana, from han- "together" + jamana, from gam- "to come;" cf. Skt. samgamana "gathering together."

association member
  هموند ِ آهزش   
hamvand-e âhazeš

Fr.: membre d'une association   

A celestial body making part of an astronomical association.

association; → member.

associative
  آهزشی، آهزنده   
âhazeši, âhazandé

Fr.: associatif   

1) Of, characterized by, resulting from, or causing association.
2) In a mathematical operation, being independent of the sequence in which the elements are grouped. For ex., if a + (b + c) = (a + b) + c, the operation indicated by + (addition) is associative.

Adj. from associate.

associative algebra
  جبر ِ آهزشی   
jabr-e âhazeši

Fr.: algèbre associative   

An algebra whose multiplication is associative.

associative; → algebra.

associative axiom
  بنداشت ِ آهزش   
bondâšt-e âhazeš

Fr.: axiome d'associativité   

A basic rule in → group theory stating that if a, b and c are members of a group then (a * b) * c and a * (b * c) are members of the group.

associative; → axiom.

<< < -ab ab- abo abs abs acc acc aco act ad add adj aeo afo agr Alf alg Alk Aln Alp alt amb ana anc ang ani ann Ant ant Ant apl apo app Aqu arc arg arr asc ass ast ast asy atm ato att aut ave axi > >>