An Etymological Dictionary of Astronomy and Astrophysics

فرهنگ ریشه شناختی اخترشناسی-اخترفیزیک

M. Heydari-Malayeri    -    Paris Observatory



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Number of Results: 703
  باز-آزاننده، باز-آزانشی   
bâz-âzânandé, bâz-âzâneši

Fr.: régénératif   

1) Of, relating to, or characterized by regeneration.
2) Tending to regenerate.

re-; → generative.

regenerative medicine
  پزشکی ِ باز-آزاننده، ~ باز-آزانشی   
pezeški-ye bâz-âzânandé, ~ bâz-âzâneši

Fr.: médecine régénérative   

A branch of medicine that replaces or regenerates injured or diseased human cells, tissue, or organs, to restore or establish normal function.

regenerative; → medicine.

nâhiyé (#)

Fr.: région   

A large, usually continuous segment of a surface or space; area. → H II region.

M.E., from Anglo-Fr. regioun; O.Fr. region, from L. regionem (nominative regio) "district, country, direction, boundary," from regere "to direct," cognate with Pers. râst, → right.

Nâhiyé, loan from Ar. nâHiyat.

  ۱) برنوس؛ ۲) برنوسیدن   
1) barnus; 2) barnusidan

Fr.: 1) registre; 2) enregistrer   

1a) A book in which records of acts, events, names, etc., are kept; a list or → record of such acts, events, etc.
1b) An entry in such a book, record, or list.
1c) → Registration or → registry (
1d) In computer science, → registry.
2a) To enter or cause to be entered formally in a register.
2b) To enroll (a student, voter, etc.) in a school or course of study, on the voting rolls, etc. (

M.E. registre, from M.Fr., from O.Fr. registre and directly from M.L. registrum, alteration of L.L. regesta "list, matters recorded," noun use of L. regesta, from regestus, p.p. of regerere "to record; retort," literally "to carry back, bring back" from → re- "back" + gerere "carry, bear."

Barnus, from bar- "on, upon, up," → on-, + nus "to write;" cf. Kurd. (Sor.) nus, nusen "to write;" Lori nisane "to write;" variants of nevis-, neveštan, → write.


Fr.: enregistrement   

1) The act or instance of registering.
2) An entry in a register (

register; → -tion.


Fr.: registre   

1) The act of registering; registration.
2) A place where a register is kept; an office of registration.
3) The state of being registered (
4) In → computers, a part of the → central processing unit used to store configuration information about the → software installed on a computer.

register + -y.


Fr.: regmaglypte   

A small depression on the surface of a → meteorite, more particularly on iron meteorites. These indentations result from the erosion of areas on the → meteoroid as material is ablated on its passage through the atmosphere.

From N.L., from Gk. rhegma "fracture, break" + Gk. glypt combining form of glyphein "to hollow out, carve, engrave."

Câluk "small hole" (Tabari), from câl, câlé "hole," from câh "a well, pit" (Mid.Pers. câh "a well;" Av. cāt- "a well," from kan- "to dig," uskən- "to dig out" (O.Pers. kan- "to dig," akaniya- "it was dug;" Mod.Pers. kandan "to dig"); cf. Skt. khan- "to dig," khanati "he digs," kha- "cavity, hollow, cave, aperture") + -uk, variant -u, a suffix of diminutive or attribution.

sangpuš (#)

Fr.: régolithe   

1) The layer of rocky → debris and → dust that forms the uppermost surface of → planets, → natural satellites, and → asteroids. Regolith on Earth is a product of → weathering.
2) In particular, → lunar regolith.

From Gk. regho(s) "rug, blanket" + -lith, from lithos "stone."

Sangpuš, literally "stone, rock covering," from sang "→ stone, rock," + puš present stem of pušidan "to cover; to put on," → envelop.

  ۱) پسرفت؛ ۲) وایازی، وایازش   
1) pasraft (#); 2) vâyâzi (#), vâyâzeš (#)

Fr.: régression   

1) Astro.: → retrograde motion.
2) Geology: A retreat of the sea from land areas. Possible causes include a drop in sea level or uplift.
3) Math.: A method for fitting a curve through a set of points using some goodness-of-fit criterion. The most common type of regression is → linear regression.

From L. regression-, from regress-, stem of regredi "to go back," from → re- "back" + gradi "to step, walk."

1) → retrograde.
2) On the model of → progression, from vâ-re- + yâzi, yâzeš, verbal noun of yâzidan "to stretch out the arms; grow up" (Parthian Mid.Pers. y'd "to reach a goal, come to, stretch out;" Av. yat- "to reach, take one's place," yaiiata "places," frā-iiatāt "has reached;" cf. Skt. yat- "to be in place, put in place, line up;" PIE base *iet- "to be in place").

regression analysis
  آنالس ِ وایازش   
anâlas-e vâyâzeš

Fr.: analyse de régression   

A statistical technique used to determine the values of parameters for a function that best fits a given set of data.

regression, → analysis.

regression coefficient
  همگر ِ وایازش   
hamgar-e vâyâzeš (#)

Fr.: coefficient de régression   

The slope of the straight line that most closely relates two correlated variables.

regression, → coefficient.

regression curve
  خم ِ وایازش   
xam-e vâyâzeš

Fr.: courbe de régression   

A curve representing a non-linear relationship between two or more → variables.

regression, → curve.

regression equation
  هموگش ِ وایازش   
hamugeš-e vâyâzeš

Fr.: équation de régression   

A mathematical expression that describes the relationship between two or more variables. It indicates the nature of the relationship and, in particular, the extent to which one can predict some variables by knowing others.

regression, → equation.

regression function
  کریای ِ وایازش   
karyâ-ye vâyâzeš

Fr.: fonction de régression   

A mathematical function that describes the relationship between two or more variables in a set of data.

regression, → function.

regression line
  خط ِ وایازش   
xatt-e vâyâzeš

Fr.: droite de régression   

The curve representing a → linear regression. It is a line drawn through a set of data that summarizes the relationship between the → variables being studied.

regression, → line.

regression of the nodes
  پسرفت ِ گره‌ها، ~ گوزهرها   
pasraft-e gerehhâ , ~ gowzahrhâ

Fr.: régression des noeuds   

The slow motion of the → nodes of the Moon's orbit in the opposite direction to the Moon's movement. This westward motion, caused by perturbations of other bodies, mainly the Earth and Sun, has a rate of 19.35 degrees per year, making one rotation in 18.6 years.

regression; → node.

  ۱) باسامان؛ ۲) رزن‌مند   
1) bâsâmân (#); 2) razan-mand

Fr.: ordonné, régulier   

1) Evenly or uniformly arranged in space or time; orderly; well-ordered.
Math.: Of a polygon, having all sides and angles equal.
2) Conforming to some accepted rule, discipline, etc.

M.E. reguler, from M.Fr., from O.Fr. reguler, from L.L. regularis "continuing rules for guidance," from L. regula "rule," cognate with Pers. râst, → right.

1) Bâsâmân, from bâ- "with, having" (→ hypo- + sâmân "order, arrangement, disposition; boundary, limit," Lârestâni sâmon "sign or mark separating one field from another," Gilaki, Tabari šalmân "a straight peace of wood or beam, post;" Mid.Pers. sâmânak, sahmân "limit;" loaned into Arm. sahmân; cf. Skt. sīmān-, sīmā- "boundary, border, limit."
2) Razan-mand, from razan, → rule, + -mand a possession suffix.

regular function
  کریای ِ باسامان   
karyâ-ye bâsâmân

Fr.: fonction régulière   

A function of a complex variable which is single-valued in a domain and which has a finite derivative at every point.

regular; → function.

regular galaxy
  کهکشان ِ باسامان   
kahkašân-e bâsâmân

Fr.: galaxie régulière   

A galaxy which has a uniformly arranged, symmetrical morphology such as a spiral or elliptical galaxy. Opposite of → irregular galaxy.

regular; → galaxy.

regular reflection
  بازتاب ِ باسامان   
bâztâb-e bâsâmân

Fr.: réflexion régulière   

The reflection of light when the reflecting surface is very smooth and the reflected rays bounce off parallel to each other. Opposite of → diffuse reflection; same as → specular reflection.

regular; → reflection.

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