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: 13176 Search : far
order of a graph
  رایه‌ی ِ نگاره   
râye-ye negâré

Fr.: ordre de graphe   

The → number of → vertices.

order; → graph.

order of a tensor
  رایه‌ی ِ تانسور   
râye-ye tânsor

Fr.: ordre de tenseur   

The maximum number of the indices (→ index) of a tensor.

order; → tensor.

order of interference
  رایه‌یِ اندرزنش   
râye-ye andarzaneš

Fr.: ordre d'interfrérence   

A whole number which characterizes a particular position of an interference fringe according to whether there is interference arising from one, two, three, etc. wavelength difference of path. Same as → interference order

order; → interference.

order of magnitude
  رایه‌یِ بُرز   
râye-ye borz

Fr.: ordre de grandeur   

Value of a number or of a physical quantity given roughly, usually expressed as a power of 10. Thus, 2.5 x 105 and 6.4 x 105 are of the same order of magnitude, and 2 x 107 is 2 orders of magnitude greater than either.

order; → magnitude.

ordered
  بارایه، رایه‌دار   
bârâyé, râyedâr

Fr.: ordonné   

Characterized by → order; arranged according to a rule. → ordered tree.

order + -ed.

ordered tree
  درخت ِ بارایه   
deraxt-e bârâyé

Fr.: arbre ordonné   

In → graph theory, a → tree in which the → children of each → vertex are ordered.

ordered; → tree.

ordinal
  رایه‌ای   
râye-yi

Fr.: ordinal   

1) Of or relating to an order, as of animals or plants.
2) Of or relating to order, rank, or position in a series.
3) → ordinal number.

M.E., from O.Fr., from L.L. ordinalis "denoting order or place in a series," from L. ordo (genitive ordinis) "row, series," → order; → -al.

order; → -al.

ordinal number
  عدد ِ رایه‌یی   
adad-e râye-yi

Fr.: nombre ordinal   

1) A number which defines the position or rank of something in a series, in contrast to → cardinal number. For example, first, second, tenth, etc.
2) In → set theory, the order type of a → well-ordered set. Also called ordinal.

ordinal; → number.

ordinary
  شونیک   
šunik

Fr.: ordinaire   

Usual; normal. → ordinary ray; → ordinary year.

M.E. ordinarie, from O.Fr. ordinarie, from L. ordinarius "regular, usual, orderly," from ordo (genitive ordinis) "order" + -arius-ary.

Šunik "ordinary," from Mid.Pers. šônik, šônig "ordinary, customary," from šôn "kind, manner, sort, way" + -ik, → -ic.

ordinary differential equation
  هموگش ِ دگرسانه‌ای شونیک   
hamugeš-e degarsâneyi-ye šunik

Fr.: équation différentielle ordinaire   

A → differential equation in which the unknown function depends on only one → independent variable, as contrasted with a → partial differential equation.

ordinary; → differential; → equation.

ordinary point
  نقطه‌ی ِ شونیک   
noqte-ye šunik

Fr.: point ordinaire   

The point M0(x0,y0) of the curve F(x,y) = 0, where at least one of the partial derivatives ∂F/∂x and ∂F/∂y does not vanish. → singular point

ordinary; → point.

ordinary ray
  پرتوِ شونیک   
partov-e šunik

Fr.: rayon ordinaire   

The ray that has an → isotropic speed in a → doubly refracting crystal. It obeys → Snell's law upon refraction at the crystal surface. See also → extraordinary ray

ordinary; → ray.

ordinary year
  سال ِ شونیک   
sâl-e šunik

Fr.: année ordinaire   

A → calendar year that contains 365 days and therefore is not a → leap year.

ordinary; → year.

ordinate
  آرا   
ârâ (#)

Fr.: ordonnée   

Math.: In plane Cartesian coordinates, the distance of a point from the x-axis measured parallel to the y-axis. → abscissa.

Ordinate, from N.L. (linea) ordinate (applicata) "(line applied) in order;" from ordinatus "arranged."

Ârâ, from ârâstan "to arrange, to set in order, adorn," Mid.Pers. ârây-, ârâstan "to arrange, adorn;" O.Pers. rās- "to be right, straight, true," rāsta- "straight, true" (Mod.Pers. râst "straight, true"), rād- "to prepare;" Av. rāz- "to direct, put in line, set," razan- "order;" Gk. oregein "to stretch out;" L. regere "to lead straight, guide, rule," p.p. rectus "right, straight;" Skt. rji- "to make straight or right, arrange, decorate;" PIE base *reg- "move in a straight line."

ore
  کانه   
kâné (#)

Fr.: minerai   

A natural deposit containing a mineral of an element to be extracted.

Ore, merger of M.E. ore, O.E. ora "ore, unworked metal" and M.E. or(e) "ore, metal," O.E. ar "brass, copper, bronze" (cf. O.N. eir "brass, copper;" Ger. ehern "brazen;" Erz "oar;" Goth. aiz "bronze;" O.H.G. ēr "ore"), from PIE *aus- "gold;" cf. Mod/Mid..Pers. âhan "iron;" Av. aiianhaēna- "made of metal," from aiiah- "metal;" Skt. áyas- "iron, metal;" L. aes "brass"

Kâné, from kân "mine," from kandan "to dig" (Mid.Pers. kandan "to dig;" O.Pers. kan- "to dig," akaniya- "it was dug;" Av. kan- "to dig," uskən- "to dig out" (→ ex- for prefix us-); cf. Skt. khan- "to dig," khanati "he digs").

organ
  ۱) اندام؛ ۲) ا ُرگ؛ ۳، ۴) ا ُرگان   
1) andâm; 2 org; 3, 4) orgân

Fr.: 1, 3, 4) organe; 2) orgue   

1) Biology: A structure consisting of tissues and performing some specific function in an organism, e.g. the heart, kidneys, liver, stomach.
2) A large musical keyboard instrument producing a wide range of musical effects using compressed air passed through pipes.
3) An organization or body acting on behalf of a larger institution.
4) A newspaper or magazine regarded as a means of communication, especially one communicating the views of a particular group such as a political party.

O.E. organe, from O.Fr. orgene "musical instrument," from L. organa, pluriel of organum, from Gk. organon "implement, musical instrument, organ of the body," literally "that with which one works," from PIE *werg-ano-, from base *werg- "to do, to work" related to Gk. ergon "work" (cf. Av. varəz- "to work, do, perform, exercise;" Mod.Pers. varz-, varzidan "to labor, exercise, practise;" Arm. gorc "work;" Lith. verziu "tie, fasten, squeeze," vargas "need, distress;" Goth. waurkjan; O.E. wyrcan "work," wrecan "to drive, hunt, pursue").

1) Andâm, from Mid.Pers. handam "member, limb;" Av. handāma- "limb;" from Proto-Iranian *ham-dāman-, from prefix ham-com- + *dāman- "created;" Av. dā- "to give, grant; to put; to create; to determine" (O.Pers./Av. dā- "to give, grant, yield," dadāiti "he gives;" Mod.Pers. dâdan "to give;" cf. Skt. dadáti "he gives;" Gk. tithenai "to place, put, set," didomi "I give;" L. dare "to give, offer," facere "to do, to make;" Rus. delat' "to do;" O.H.G. tuon, Ger. tun, O.E. don "to do;" PIE base *dhe- "to put, to do"); cf. Skt. sandháy- "joint, articulation."
2), 3), 4) loanwords from Fr., as above.

organic
  ۱) ارگانیک، آلی؛ ۲) سازماندار؛ ۳) ارگانیک   
1) orgânik, âli; 2) sâzmândâr; 3) orgânik

Fr.: organique   

1) Of, relating to, or derived from living organisms: organic matter.
2) Characterized by the systematic arrangement of parts; organized; systematic.
3) Chemistry: Of or designating carbon compounds.

From L. organicus, from Gk. organikos "of or pertaining to an organ," from organon "instrument," → organ, + → -ic.

1) Orgânik, loan from Fr.; âli loan from Ar.; 2) sâzmândâr, from sâzmân, → organization, + dâr "having, possessor" (from dâštan "to have, to possess," Mid.Pers. dâštan, O.Pers./Av. root dar- "to hold, keep back, maitain, keep in mind," Skt. dhr-, dharma- "law," Gk. thronos "elevated seat, throne," L. firmus "firm, stable," Lith. daryti "to make," PIE *dher- "to hold, support").

organic chemistry
  شیمیِ ارگانیک، ~ ِ آلی   
šimi-ye orgânik, ~ âli

Fr.: chimie organique   

The study of compounds that contain carbon chemically bound to hydrogen.

organic; → chemistry.

organic molecule
  مولکول ِ ارگانیک   
molekul-e orgânik

Fr.: molécule organique   

A molecule that is normally found in or produced by living systems. Organic molecules typically consist of carbon atoms in rings or long chains, where other atoms (e.g. hydrogen, oxygen, and nitrogen) are attached, except for → carbon monoxide (CO) and → carbon dioxide (CO2), etc.

organic; → molecule.

organism
  سازواره   
sâzvâré (#)

Fr.: organisme   

1) Biology: A living individual composed of mutually interdependent parts that maintain various vital processes.
2) Any organized body or system conceived of as analogous to a living being. → microorganism

From → organ + -ism a suffix appearing in loanwords from Gk. denoting several senses, among which state or condition, principles, doctrines.

Sâzvâré, from sâz present stem of sâxtan, sâzidan "to build, make, fashion; to adapt, adjust, be fit" (from Mid.Pers. sâxtan, sâz-, Manichean Parthian s'c'dn "to prepare, to form;" Av. sak- "to understand, to mark," sâcaya- (causative) "to teach") + -vâré, from -vâr a suffix meaning "resembling, like" (from Mid.Pers. -wâr; Av. -vara, -var; cf. Skt. -vara).


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