An Etymological Dictionary of Astronomy and Astrophysics

فرهنگ ریشه شناختی اخترشناسی-اخترفیزیک

M. Heydari-Malayeri    -    Paris Observatory



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Number of Results: 716
  ۱) بخش؛ ۲) شکاف   
1) baxš; 2) šekâf

Fr.: division   

1) The act or process of dividing; state of being divided.
Math.: An operation in which a dividend is divided by a divisor to give a quotient and a remainder.
2) Something that marks a division; a separation.

From O.Fr. division, from L. divisionem (nom. divisio), from divid-, stem of dividere "to cleave, distribute," from → dis- "apart" + -videre "to separate," from PIE base *widh- "to separate."

1) Baxš "portion, part, division," baxšidan "to divide, distribute, grant;" Mod./Mid.Pers. baxt "fortune, fate," baxtan, baxšidan "to distribute, divide," bâq "garden," initially "piece or patch of land," baq "god, lord;" Av. bag- "to attribute, allot, distribute," baxš- "to apportion, divide, give to," baxta- "what is allotted (luck, fortune)," baxədra- "part, portion," baγa- "master, god;" O.Pers. bāji- "tribute, tax;" cf. Skt. bhaj- "to share, divide, distribute, apportion," bhájati "divides," bhakta- "allotted; occupied with; a share; food or a meal, time of eating?" pitu-bháj- "enjoying food;" Gk. phagein"to eat (to have a share of food)"; PIE base *bhag- "to share out, apportion."
2) Šekâf "a fissure, crack, slit," šekâftan "to divide into two long strips, split, break," Mid.Pers. škâftan.

division sign
  نشانه‌ی ِ بخش   
nešâne-ye baxš

Fr.: signe de division   

A symbol placed between two quantities (dividend and the divisor) to indicate the division of the first by the second. The division sign is written as a horizontal line with dot above and dot below, ÷ (→ obelus), or a slash or horizontal line.

division; → sign.

baxšyâb (#)

Fr.: diviseur   

A number by which another number, the → dividend, is divided.

division; → -or.

Baxšyâb, literally "division finder, ~ obtainer," from baxš, → division, + yâb, → finder.

DO white dwarf
  سفید‌کوتوله‌ی ِ DO   
sefid kutule-ye DO

Fr.: naine blanche DO   

A → white dwarf whose spectrum shows strong lines of singly ionized helium He II; He I or H may be present. As a DO star cools, the He II will recombine with free electrons to form He I, eventually changing the DO type into a DB white dwarf.

D short for → dwarf; O a convention; → white.

  ۱) دپه؛ ۲) دپیدن   
1) dapé; 2) dapidan

Fr.: 1) document; 2) (se) documenter   

1) A written or printed paper furnishing information or evidence, as a passport, deed, bill of sale, or bill of lading; a legal or official paper.
2) To furnish with documents. To furnish with references, citations, etc., in support of statements made (

M.E., from O.Fr. document "written evidence," from L. documentum "example, proof, lesson," in M.L. "official written instrument," from docere "to show, teach," cognate with Av. daē- "to show," Pers. andišidan, → think.

Dapé, from Mid.Pers. dib, dip "document;" O.Pers. dipī- "inscription;" related to dabir, → secretary; dapidan, infinitive from dap, dapé.

  دپگی، دپگین   
dapegi, dapegin

Fr.: documentaire   

1) Pertaining to, consisting of, or derived from documents.
2) Movies, Television: Based on or re-creating an actual event, era, life story, etc., that purports to be factually accurate and contains no fictional elements (

document; → -ary.


Fr.: documentation   

1) The use of documentary evidence.
2) A furnishing with documents, as to substantiate a claim or the data in a book or article.
3) Computers: Manuals, listings, diagrams, and other hard- or soft-copy written and graphic materials that describe the use, operation, maintenance, or design of software or hardware (

document; → -tion.

sag (#)

Fr.: chien   

A domestic mammal related to the wolf and bred in many varieties.

From M.E. dogge, from O.E. docga "hound, powerful breed of dog," cognate with Scots dugdogge, Ger. Dogge, of unknown origin.

Sag "dog" (Lori say, sayu "puppy;" Pashto spay, spie "bitch;" Semnâni esba; Sangesari əsba; Kajali of Khlkhâl esbé; Tâleshi of Vizna səba; Abyâni kuyâ); from Mid.Pers. sag "dog;" O.Pers. *saka-; Median *spaka-; Av. spā-; cf. Skt. svâ-; L. canis "dog;" Gk. kuon; O.E. hund, E. hound, Ger. Hund; PIE *kwon-.

kiš (#)

Fr.: dogma   

1) A specific tenet or doctrine authoritatively laid down, as by a church.
2) An official system of principles or tenets concerning faith, morals, behavior, etc., as of a church.
3) Prescribed doctrine proclaimed as unquestionably true by a particular group (

L. dogma "philosophical tenet," from Gk. dogma "opinion, tenet," literally "that which one thinks is true," from dokein "to seem good, think," cognate with Pers. andišé "thought," dis, → form.

Kiš "dogma, religion," from Mid.Pers. kêš "religion, faith, dogma;" Av. tkaēša- "teaching," kaeš-, kaš- "to teach;" PIE *kweis- "to observe, see" (Cheung 2007).

  کیشناک، کیشمند، کیشور   
kišnâk, kišmand, kišvar

Fr.: dogmatique   

1) Of, pertaining to, or of the nature of a dogma or dogmas; doctrinal.
2) Asserting opinions in a doctrinaire or arrogant manner; opinionated (

dogma + -t- + → -ic.


Fr.: domaine   

1) Math.: The set of x values that can go into a function f(x). Compare with → codomain and → range.
2) Ferromagnetism: → magnetic domain.

From M.Fr. domaine "domain, estate," from O.Fr. demaine "lord's estate," from L. dominium "property, dominion," from dominus "master of a household," from domus "house;" cognate with Pers. dam, as below; Gk. domos "house;" O.C.S. domu , Russ. dom "house;" Lith. dimstis "enclosed court, property;" O.E. timber "building, structure"); PIE base *dem-/*dom- "to build."

Daman, from Av. dəmāna- "house," dami "in the house;" cf. Sogd. δmān "house;" Mod.Pers. dam "wealth, means of comfort" (often as dam o dastgâh); "threshold, doorway;" Gilaki dâmana "ceiling;" Sariqoli waδem, Yazghulami wəδem "ceiling;" Skt. dám- "house;" Proto-Iranian *damH- "to build;" Gk. demo "I build;" L. domus "house," as above.

domain wall
  دیوار ِ دمن   
divâr-e daman

Fr.: paroi de domaine, mur ~ ~   

In a → ferroelectric substance, the transition layer between two → domains magnetized in different directions. It is of finite thickness ans has nonuniform → magnetization.

domain; → wall.

gonbad (#)

Fr.: coupole   

A vault, having a circular plan and usually in the form of a portion of a sphere, that shelters an optical telescope.
Geology: Rounded volcanic structure produced by eruption or intrusion of viscous high-silica magma. An uplift that is round or elliptical in map view with beds dipping away in all directions from a central point.

From Fr. dôme, from Gk. doma "house, housetop," related to domos "house" (PIE *domo-/*domu- "house, household;" cf. Av. dam-, dəmāna- "house," Skt. dám- "house," Gk. doma "house," L. domus "house," Rus. dom "house," Lith. dimstis "enclosed court, property," O.E. timber "building, structure").

Mid.Pers. gumbat, gônbat.

dome hatch
  دریچه‌ی ِ گنبد   
darice-ye gonbad

Fr.: volet de coupole   

One of small covers that can be moved along the dome slit to vary the slit size.

dome; → hatch.

dome shutter
  بستار ِ گنبد   
bastaar-e gonbad

Fr.: fermeture de fente   

A pair of rolling lids that are used to open or close the dome slit.

dome; shutter from to shut, from O.E. scyttan from W.Gmc. *skutjanan + → -er.

Bastâr, from bast, past tense stem of bastan + -âr. Bastan, from Mid.Pers. bastan/vastan "to bind, shut," Av./O.Pers. band- "to bind, fetter," banda- "band, tie," Skt. bandh- "to bind, tie, fasten," PIE *bhendh- "to bind," cf. Ger. binden, E. bind, → band. The suffix -âr creates creates agent nouns; → dome.

dome slit
  شکاف ِ گنبد   
škâf-e gonbad

Fr.: fente de coupole   

An opening along the spherical body of a dome through which an optical telescope can observe.

dome; → slit.

dominant coefficient
  همگر ِ چیرنده   
hamgar-e cirandé

Fr.: coefficient dominant   

Of a → non-zero polynomial, the coefficient of the → monomial which has the highest → degree.

Dominant, adj. from → dominant; → coefficient.


Fr.: dominer   

To have control, authority, or influence; to be the most important or conspicuous person or thing.
core-dominated quasar, → dominant coefficient, → dominated series, → domination, → lobe-dominated quasar, → matter-dominated Universe, → radiation-dominated Universe.

From L. dominatus, p.p. of dominari "to rule, dominate, govern," from dominus, → domain.

Ciridan, from ciré "dominant; powerful; victorious," Mid.Pers. cêr "victorious, brave," Av. cirya- "able, brave."

dominated series
  سری ِ چیریده   
seri-ye ciridé

Fr.: série dominée   

A → series if each of its → terms does not exceed, in absolute value, the corresponding term of some convergent numerical series with positive terms.

Dominated, p.p. of → dominate; → series.


Fr.: domination   

An act or instance of dominating.

Verbal noun of → dominate.

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