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
distinction
  بژنایش   
bažnâyeš

Fr.: distinction   

1) The act or an instance of distinguishing or differentiating.
2) A distinguishing feature.
3) The state of being different or distinguishable.
4) Special honor, recognition, or fame (The FreeDictionary.com).

distinct; → -tion.

distinctive
  بژناینده   
bažnâyande

Fr.: distinctif   

Serving to identify; distinguishing or characteristic.

distinct; → -ive.

distinctly
  بژنانه   
bažnâne

Fr.: distinctement, clairement   

In a clear and noticeable way; clearly.

distinct; → -ly.

distinctness
  بژنایی   
bažnâyi

Fr.: distinction, différence   

The state or quality of being distinct.

distinct; → -ness.

distinguish
  بژناییدن   
bažnâyidan

Fr.: distinguer   

1) To perceive as being different or distinct.
2) To demonstrate or describe as being different or distinct.

ME. distingwen, from O.Fr. distinguer, from L. distinguere "to separate between, divide, mark off," perhaps literally "separate by pricking," from assimilated form of → dis- "apart" + -stinguere "to prick."

Bažnâyidan, verb from bažnâ, → distinct.

distinguished
  بژناییده، بژناسته   
bažnâyide, bažnâste

Fr.: distingué   

1) Characterized by excellence or distinction; eminent.
2) Dignified in conduct or appearance (TheFreeDictionary.com).

Past participle of → distinguish.

distort
  چوله‌کردن، چولیدن   
cowlé kardan, cowlidan

Fr.: déformer, altérer   

To twist awry or out of shape; make crooked or deformed (Dictionary.com).

From L. distortus, p.p. of distorquere "to distort," from → dis-, + torquere "to twist."

Cowlé "distorted, crooked, bent," variants [Mo'in] kowlé, kal, kil, Lori cowel, Laki hoval, hol, Malâyeri caval, hol, Tabari, Aftari val, Mid.Pers. xwahl "bent, crooked;" PIE base *klei- "to lean, incline" from which is also derived Gk. klinein "to cause to slope, slant, incline," L. clinare "to bend," → declination.

distortion
  چولگی، چولش   
cowlegi (#), cowleš

Fr.: distorsion, déformation   

1) Extent to which a system, optical, acoustic, or electronic, fails to reproduce accurately at its output the characteristics of the input.
2) Optics: An optical imperfection caused by a → lens or → system of lenses which results in → magnification differences between different points on the → image. The points on the → object are misplaced in the image relative to the → center of the → field. See also → barrel distortion; → pincushion distortion.

Verbal noun of → distort.

distribute
  واباژیدن   
vâbâžidan (#)

Fr.: distribuer   

1) (v.tr.) To divide and dispense in portions; to disperse through a space or over an area.
2) (v.intr.) Math.: To be → distributive. → distribution.

Distribute, from L. distributus p.p. of distribute "deal out in portions," from → dis- + tribuere "to pay, assign, allot," from tribus "tribe."

Vâbâžidan, infinitive of vâbâž, from vâ-dis- + bâž "tribute, toll, impost," from Mid.Pers. bâj, bâž "tribute, tax," baxtan "to distribute," baxt "luck, fate," O.Pers. bāji- "tribute, tax," Av. bag- "to distribute, divide, allot," cf. Skt. bhaj- "to share, distribute, apportion," Gk. phagein "to eat (to have a share of food)"; PIE base *bhag- "to share out, apportion;" → division.

distribution
  واباژش   
vâbâžeš (#)

Fr.: distribution   

An act or instance of distributing; the state or manner of being distributed; something that is distributed. → binomial distribution, → Bose-Einstein distribution, → brightness distribution, → chi-square distribution, → cumulative distribution function, → distribution function, → Gaussian distribution, → Gibbs canonical distribution, → lognormal distribution, → Maxwell-Boltzmann distribution, → normal distribution, → Poisson distribution, → power-law distribution, → probability distribution, → spectral energy distribution.

Verbal noun of → distribute

distribution function
  کریای ِ واباژش   
karyâ-ye vâbâžeš

Fr.: fonction de distribution   

A function that gives the relative frequency with which the value of a statistical variable may be expected to lie within any specified interval. For example, the Maxwellian distribution of velocities gives the number of particles, in different velocity intervals, in a unit volume.

distribution; → function.

distributive
  واباژشی   
vâbâžeši

Fr.: distributif   

Characterized by or relating to → distribution. → distributive law.

distibution; → -ive.

distributive law
  قانون ِ واباژش   
qânun-e vâbâžš

Fr.: loi distributive   

Math.: In multiplication, the principle that permits the multiplier to be applied separately to each term in the multiplicand: x(y + z) = xy + xz. → associative law; → commutative law.

distributive; → law.

distributivity
  واباژندگی   
vâbâžandegi

Fr.: distributivité   

The state or quality of being distributive.

Noun of → distributive.

disturb
  پریشاندن   
parišândan (#)

Fr.: déranger, perturber   

1) To interfere with; interrupt; hinder.
2) To interfere with the arrangement, order, or harmony of; disarrange (Dictionary.com).

M.E., from O.Fr. destorber, from L. disturbare "to throw into disorder," from → dis- "completely" + turbare "to disorder, disturb," from turba "turmoil," → turbid.

Parišândan, infinitive from parišân "dispersed, scattered," also parišidan "to disperse, get disturbed," ultimately from Proto-Ir. *parišan- literally "disperse around," from *pari-, Pers. par-, pirâ-, → peri-, + *šan- "to shake;" cf. afšândan, → volcano; Choresmian šny- "to tremble;" Zazaki šânâyiš/šânen- "to shake, scatter;" Kurd râšândin "to spread;" Tabari šanne "he shakes" (Cheung 2007).

disturbance
  پریشانش   
parišâneš

Fr.: dérangement, perturbation   

The act of disturbing. The state of being disturbed.

Verbal noun of → disturb.

diurnal
  روزانه   
ruzâné (#)

Fr.: diurne   

Having a period of, occurring in, or related to a → day.

L.L. diurnalis, from V.L. diurnum "day" (Fr. jour), from L. diurnus "daily," from dies "day" + -urnus, an adj. suffix denoting time. Dies "day" from PIE base *dyeu- "to shine;" cf. Gk. delos "clear;" L. deus; Skt. deva "god;" Mod.Pers. div "devil, demon;" O.Pers. daiva- "evil god, demon;" Av. daēva- "evil spirit, false god;" Gk. Zeus "supreme god."

Ruzâné, from ruzday + -âné a suffix forming adverbs and adjectives.

diurnal aberration
  بیراهش ِ روزانه   
birâheš-e ruzâné

Fr.: aberration diurne   

The aberration of a star's position due to the rotation of the Earth. Its value depends on the latitude of the observer, and is only 0''.32 in the case of an observer at the equator, where the rotational velocity is greatest.

diurnal; → aberration.

diurnal circle
  پرهون ِ روزانه، دایره‌ی ِ ~   
parhun-e ruzâné, dâyere-ye ~

Fr.: cercle diurne   

The apparent path of an object in the sky during one day, due to Earth's rotation.

diurnal; → circle.

diurnal libration
  هلازان ِ روزانه   
halâzân-e ruzâne

Fr.: libration diurne   

Daily geometrical libration of the Moon arising from the fact that observers at different points on the Earth see the Moon from slightly different angles. As the Moon rises in the east, you are positioned on one side of our planet, and by the time it sets in the west. Earth's rotation has carried you to the other side. This change in position produces a slight → parallax effect that adds about another 1° of libration in longitude. Two other geometrical libration are → libration in longitude and → libration in latitude. See also → physical libration.

diurnal; → libration.


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