An Etymological Dictionary of Astronomy and Astrophysics

فرهنگ ریشه شناختی اخترشناسی-اخترفیزیک

M. Heydari-Malayeri    -    Paris Observatory



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Number of Results: 699
reading rate
  نرخ ِ خوانش   
nerx-e xâneš

Fr.: vitesse de lecture   

In computing and data processing, the number of words, characters, fields, etc. sensed by an input sensing device per unit of time.

Reading, verbal noun of read, from M.E. reden, O.E. rædan, redan "to counsel, read;" cf. Du. raden, Ger. raten "to advise, counsel, guess;" akin to Skt. rādh- "to succeed, accomplish;" Gk. arithmos "number amount;" L. ratio; Pers. rây, râ "because of, for the sake of;" → reason; → rate.

Nerx, → rate; xâneš verbal noun of xândan "to read; to sing; to call;" Mid.Pers. xwân- "to resound; to call;" Av. xvan- "to sound," Proto-Iranian *huan- "to call;" cf. Skt. svan-, sváranti "to sound, make a sound, sing;" L. sonus "sound," sonare "to sound;" O.E. swinn "music, song," PIE base *suen- "to sound" (Cheung 2007).

readout noise
  نوفه‌ی ِ خوانش   
nufe-ye xâneš

Fr.: bruit de lecture   

The noise added in the process of reading a detector such as a CCD.

reading rate; → noise.


Fr.: réactif   

A chemical substance that, because of the reactions it causes, is used to detect, measure, or prepare another substance.

From re(act) + → agent.

Vâkonešgar, from vâ-, → re-, + konešgaragent.


Fr.: réel   

1) General: Having actual physical existence; genuine, not artificial.
2) Math.: Involving, relating to, or having elements of the set of rational or irrational numbers only.
3) Philo.: Existent or pertaining to the existent as opposed to the nonexistent; actual as opposed to possible or potential.
See also:
real dynamical variable, → real equator, → real equinox, → real fluid, → real gas, → real image, → real number, → real object, → real-time operation, → real-time processing, → realism, → realist, → realistic, → reality, → true.

M.E., from O.Fr. reel, from L.L. realis "relating to things; actual," from L. res "matter, thing," of unknown origin.

Hasyâ, from O.Pers. hašya- "true, real;" Av. haiθa- "true, real;" cf. Khotanese hiththo "true, real;" Ossetic aecaeg "true, real, genuine;" Skt. satyá- "true, real, genuine;" PIE base *es- "to be" (Mod.Pers. hastan, astan "to be;" O.Pers./Av. ah-, Skt. as-).

real dynamical variable
  ورتنده‌ی ِ توانیک ِ هسیا   
vartande-ye tavânik-e hasyâ

Fr.: variable dynamique réel   

A → dynamical variable which does not have an → imaginary number part.

real; → dynamical; → variable.

real equator
  هموگار ِ هسیا   
hamugâr-e hasyâ

Fr.: équateur vrai   

Same as → true celestial equator.

real; → equator.

real equinox
  هموگان ِ هسیا   
hamugâr-e hasyâ

Fr.: équinoxe vrai   

Same as → true equinox.

real; → equinox.

real fluid
  شاره‌ی ِ هسیا   
šârre-ye hasyâ

Fr.: fluide réel   

The opposite of an ideal fluid; a fluid which possesses viscosity and therefore exhibits certain frictional phenomena. Viscosity arises due to cohesive forces between molecules and molecular momentum exchange between fluid layers. These effects appear as tangential or shear stresses between moving fluid layers.

real; → fluid.

real gas
  گاز ِ هسیا   
gâz-e hasyâ

Fr.: gaz réel   

Actual gas whose molecules do not necessarily possess the properties assigned to those of an → ideal gas.

real; → gas.

real image
  تصویر ِ هسیا   
tasvir-e hasyâ

Fr.: image réelle   

In an optical system, the image of an object produced by the convergence of the light rays that make up the image. → virtual image; → real object.

real; → image.

real number
  عدد ِ هسیا   
adad-e hasyâ

Fr.: nombre réel   

A number that can be represented by a point on a line. The set of real numbers includes all rational and irrational numbers, but not the imaginary numbers.

real; → number.

real object
  بر‌آخت ِ هسیا   
baâxt-e hasyâ

Fr.: objet réel   

In an optical system, a collection of points which actually serves as a source of light rays.

real; → object.

real-time operation
  آپارش در زمان ِ هسیا   
âpâreš dar zamân-e hasyâ

Fr.: opération en temps réel   

The operation of a computer during the actual time that the related physical processes take place so that the results can be used to guide the physical processes.

real; → time; → operation.

real-time processing
  آمایش در زمان ِ هسیا   
âmâyeš dar zamân-e hasyâ

Fr.: traitement en temps réel   

Data processing that takes place instantaneously upon data entry or receipt of a command.

real; → time; → processing.

  هسیاگرایی؛ هسیاباوری   
hasyâgerâyi; hasyâbâvari

Fr.: réalisme   

1) An inclination or concern for the actual or real, as distinguished from the abstract or speculative.
2) Philo.: The doctrine that material objects exist independently of our perception of them.
3) Art, literature: The attempt to describe the objects or social conditions as they actually are, without idealization or presentation in abstract form.

real; → -ism.

  ۱) هسیاگرا، هسیاباور؛ ۲) هسیامند   
1) hasyâgerâ, hasyâbâvar; 2) hasyâmand

Fr.: réaliste   

1) A person who tends to view or represent things as they really are; an adherent of → realism.
2) Of or pertaining to realism or to a person who embodies its principles or practices.

real; → -ist.


Fr.: réaliste   

1) Interested in, concerned with, or based on what is real or practical.
2) Philo.: Of or pertaining to realists or → realism.

From → real + -istic, from L. -isticus, Gk. -istikos, from -ikos, → -ic.


Fr.: réalité   

1) The state or quality of being real. A real thing or fact.
2) Philo.: The totality of what is, as opposed to what merely seems to be.

real + → -ity.

  ۱؛ ۲؛ ۳) راین؛ ۳) خرد؛ ۴) راینیدن   
1; 2; 3) râyan; 3) xerad; 4) râyanidan

Fr.: raison   

1) A basis or cause, as for some belief, action, fact, event, etc.
2) A statement presented in justification or explanation of a belief or action.
3) The mental powers concerned with forming conclusions, judgments, or → inferences.
Philo.: The intellectual ability to apprehend the truth cognitively, either immediately in intuition, or by means of a process of inference. See also → wisdom.
4) (v.) To think or argue in a logical manner; to form conclusions, judgments, or inferences from facts or premises.

M.E. resoun, reisun (n.), from O.Fr. reisun, reson, raison, from L. rationem (nom. ratio) "reckoning, understanding, motive, cause," from ratus, p.p. of reor, reri "to reckon, think;" cognate with Pers. râ, rây "reason," as below; O.C.S. raditi "to take thought, attend to," O.Ir. im-radim "to deliberate, consider."

Râyan, from rây + -an. The first component rây, râ "because of, by reason of," in barây-e "because of," cerâ "for what reason, why?," irâ "for this reason, therefore," zirâ "because, on account of;" also rây "opinion, consult;" râymand "reasonable, wise;" râyzan "a person whom one consults; wise;" Mid.Pers. râd, rây "because of, for the sake of, on behalf of;" O.Pers. "reason, cause," in rādiy "for this reason;" Av. rādah- "generosity, care, generous," rāsta- "to do right, to fit;" cf. Skt. rādh- "to succeed, be successful;" Gk. arithmos "number, amount;" L. ratio, as above; PIE base *rē-, *rə-. The second component -an a suffix as in rowzan, rowšan, suzan, rasan, zaqan, hâvan, etc.


Fr.: raisonable   

Being in accordance with reason.

reason; → -able.

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