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 : in
fabulate
  افسانه‌بافتن   
afsâné-bâftan (#)

Fr.: affabuler, inventer   

1) To tell invented stories; create fables or stories filled with fantasy.
2) To relate an event as a fable.

From L. fabulatus perfect passive participle of fabulor, from fabula, → fable.

Afsâne-bâftan "to forge fables, stories," from afsâné, → fable, + bâftan "to weave, twist, plait," → texture.

fabulation
  افسانه‌بافی   
afsâné-bâfi (#)

Fr.: fabulation, affabulation   

1) To tell invented stories; create fables or stories filled with fantasy.
2) To relate an event as a fable.

fabulate; → -tion.

fabulous
  افسانه‌ای، افسانه‌گون   
afsâne-yi, afsânegun

Fr.: fabuleux, extraordinaire, légendaire   

1) Almost impossible to believe; incredible.
2) Exceptionally good or unusual; marvelous; superb.

fable; → -ous.

face
  دیم، رو، رخ، رخسار   
dim, ru, rox, roxsâr

Fr.: face   

1) The front part of the head, from the forehead to the chin.
2) A plane surface of a geometric solid. The front of something having more than two sides. → interface.

M.E., from O.Fr. face, from L. facies "appearance, form; visage, countenance."

Dim "face," from Av. daēman- "eye," from dā(y)- "to see," didāti "sees" (cf. Mod.Pers. didan "to see," Mid.Pers. ditan "to see, regard, catch sight of, contemplate, experience;" O.Pers. dī- "to see;" Skt. dhī- "to perceive, think, ponder; thought, reflection, meditation," dādhye; Gk. dedorka "have seen").
Ru(y), variant rox "face, surface; aspect; appearance" (Mid.Pers. rôy, rôdh "face;" Av. raoδa- "growth," in plural form "appearance," from raod- "to grow, sprout, shoot;" cf. Skt. róha- "rising, height").

face angle
  زاویه‌ی ِ دیمی، دیم-زاویه   
zâviye-ye dimi, dim-zâviyé

Fr.:   

An angle formed by any two adjacent edges of a → polyhedron, in contrast to a → dihedral angle.

face; → angle.

face-on galaxy
  کهکشان ِ رونما   
kahkešân-e runemâ

Fr.: galaxie vue de face   

A → spiral galaxy oriented such that it is viewed from above or below. → edge-on galaxy.

face; → on-; → galaxy.

facilitate
  آسانیدن   
âsânidan

Fr.: faciliter   

To make easier, render less difficult.

From Fr. faciliter "to make easy," from stem of L. facilis "easy to do," from facere "to do," → fact.

Âsânidan "to render easy," from âsân, → easy.

facilitation
  آسانش   
âsâneš

Fr.: facilitation   

The act or process of facilitating.

facilitate; → -tion.

facility
  آساناک   
âsânâk

Fr.: facilité   

1) Ease in moving, acting, or doing.
2) Something that facilitates an action or process.
3) A building, room, array of equipment, or a number of such things, designed to serve a particular function (TheFreeDictionary.com).

facile; → -ity.

Âsânâk, from âsân "easy," + relation suffix -âk, as in xorâk, pušâk, dârâk.

fact
  باشا، بوده   
bâšâ, budé (#)

Fr.: fait   

Something that has actual existence; a piece of information presented as having objective reality. → scientific fact.

L. factum "event, occurrence," literally "something done, deed," from neut. p.p. of facere "to do" (cf. Fr. faire, Sp. hacer), from PIE base *dhe- "to put, to do" (cf. Mod.Pers. dâdan "to give;" O.Pers./Av. dā- "to give, grant, yield," dadāiti "he gives; puts;" Skt. dadáti "puts, places;" Hitt. dai- "to place;" Gk. tithenai "to put, set, place;" Lith. deti "to put;" Czech diti, Pol. dziac', Rus. det' "to hide," delat' "to do;" O.H.G. tuon, Ger. tun, O.E. don "to do").

Bâšâ, from bâš + agent suffix; bâš, present stem of budan "to be," from Mid.Pers. budan, from O.Pers./Av. bav- "to be; become, take place;" Av. buta- perf. ptcpl. pass., bavaiti "becomes" (cf. Skt. bhavati "becomes, happens," bhavah "becoming; condition, state;" PIE *bheu- "to be, come into being, become;" Gk. phu- "become," phuein "to bring forth, make grow;" L. fui "I was" (perf. tense of esse), futurus "that is to be, future;" Ger. present first and second person sing. bin, bist; E. to be; Lith. bu'ti "to be;" Rus. byt' "to be"); budé also from budan.

factor
  کروند   
karvand

Fr.: facteur   

1) One that actively contributes to the production of a result.
2) Math.: Any of the numbers or symbols that when multiplied together form a → product.

M.Fr. facteur "agent, representative," from L. factor "doer or maker," from facere "to do" (cf. Fr. faire, Sp. hacer); from PIE base *dhe- "to put, to do;" cf. Skt. dadhati "puts, places;" Av. dadaiti "he puts;" Hitt. dai- "to place;" Gk. tithenai "to put, set, place;" Lith. deti "to put;" Rus. det' "to hide," delat' "to do;" O.H.G. tuon; Ger. tun; O.S., O.E. don "to do."

Karvand, from kar- root of Mod.Pers. verb kardan "to do, to make" (Mid.Pers. kardan; O.Pers./Av. kar- "to do, make, build;" Av. kərənaoiti "he makes;" cf. Skt. kr- "to do, to make," krnoti "he makes, he does," karoti "he makes, he does," karma "act, deed;" PIE base kwer- "to do, to make") + -vand a suffix forming adjectives and agent nouns.

factor tree
  درخت ِ کروند   
deraxt-e karvand

Fr.: arbre des facteurs   

A diagram representing a systematic way of determining all the prime factors of a number.

factor; → tree.

factorial
  ۱) کرونده؛ ۲) کروندی   
1) karvandeh; 2) karvandi

Fr.: factoriel   

1) (n.) The product of all the positive integers from 1 to n, denoted by symbol n!
2) (adj.) of or pertaining to factors or factorials.

factor + -ial, from L. -alis, → -al.

factorize
  کروندیدن، کروند گرفتن   
karvandidan, karvand gereftan

Fr.: factoriser   

The operation of resolving a quantity into factors.

factor + → -ize.

facula
  پریسک   
perisk

Fr.: facule   

A bright area of the → photosphere of the Sun visible in white light and best seen near the solar limb, although they occur all across the Sun. Faculae raise several hundred kilometers above the photosphere and are associated with → sunspots. They often appear immediately before the formation of a sunspot group and remain visible for several days or weeks after the disappearance of the spots. Faculae are formed when a strong magnetic field heats a region of the photosphere to higher temperatures than the surrounding area.

Facula, from L. fac-, fax "torch" + -ula, → -ule.

Perisk, periska, biriske in Lori, Laki, and Kurd. dialects "spark" (Lârestâni pelita), probably related to Lori porpor "blazing charcoal," Gilaki bur, biur "smokeless red fire;" cf. Tokharian por, puwar "fire;" Gk. pyr "fire;" Hitt. pahhur "fire;" Skt. pū- "to cleanse;" E. fire; O..E. fyr, from P.Gmc. *fuir (cf. O.N. fürr, M.Du. vuur, Ger. Feuer); PIE base *paewr- "fire."

Fahrenheit scale
  مرپل ِ فارنهایت   
marpel-e Fahrenhait

Fr.: échelle de Fahrenheit   

A temperature scale (°F) in which the → freezing point of → water is 32 degrees and the → boiling point is 212 degrees; the points are placed 180 degrees apart. It converts to the → Celsius scale by the formula: C = (5/9)(F - 32). See also → Kelvin scale, → Rankine scale, → Reaumur scale.

Developed by the German physicist Gabriel Fahrenheit (1686-1736); → scale.

fail
  غاویدن   
qâvidan

Fr.: échouer, faillir   

1) To be unsuccessful in achieving something expected, attempted, or desired.
2) To neglect to do something.
3) To be e unsuccessful in an examination.

M.E. failen, from O.Fr. falir "be lacking, miss, not succeed; come to an end; make a mistake; be dying," from Vulgar L. *fallire, from L. fallere "to trip, cause to fall;" figuratively "to deceive, trick, dupe, cheat; fail, be lacking or defective."

Qâvidan, from Choresmian γaw "to fail, to commit a fault;" cf. Av. gau- "to commit a sin;" Parthian (+*fra-) pargaw- "to owe, to lack;" Ossetian qaewyn/qyd "to be in need of something, to lack;" Proto-Ir. *gaHu- "to be faulty, wanting; to need;" PIE *gheHu- "to be faulty, lacking, insufficient;" cf. Old L. hauelod "insufficient, false," L. hau(d) "not;" O.Irish gáu, gó; Welsh gau "lie" (Cheung 2007).

failure
  غاوش   
qâveš

Fr.: échec, défaillance   

1) An act or instance of failing; lack of success.
2) A state of inability to perform a normal function.

Verbal noun from → fail.

faint
  ۱) تام، نزار، کمتاب، کمنور؛ ۲) تامیدن   
1) tâm, nazâr, kamtâb, kamnur; 2) tâmidan

Fr.: 1) faible; 2) s'evanouir   

1) Lacking brightness, vividness, clearness, loudness, strength; feeble; exhausted.
2) To lose consciousness temporarily; to lose brightness (Dictionary.com).

From O.Fr. faint, feint "false, deceitful; sham, artificial; weak, faint, lazy," p.p. of feindre "hesitate, falter, show weakness," from L. fingere "to touch, handle; change."

Tâm, from Pers. tâm "feeble, fragile, weak," ultimately from Proto-Ir. *tamH- "to faint, be tired;" cf. Khotanese ttāmā "fatigue;" Parthian t'm'dg "fainted, choking;" Gilak (Langarudi) tâmâ, tâm "silent;" PIE base *temH- "to faint, to be dark;" tâmidan, infinitive from tâm.
Nazâr, from Mid.Pers. nizâr "weak, feeble" (variant zâr), zarmân "old man, deterioration;" Av. zairina- "exhausting, slackening," zaurura- "weak through old age, decrepit;" cf. Skt. jára- "wearing out, exhaustion," jaranā- "old, decayed," jarimán- "weakness through old age," Gk. geron "old man," L. granum "grain;" PIE base *ger- "wear away."
Kamtâb, from kam "little, few; deficient, wanting; scarce," from Mid.Pers. kam "little, small, few," O.Pers./Av. kamna- "small, few" + tâb "light; heat, warmth; illuminating," from tâbidan, tâftan "to shine," tafsidan "to become hot;" Av. tāp-, taf- "to warm up, heat," tafsat "became hot," tāpaiieiti "to create warmth;" cf. Skt. tap- "to spoil, injure, damage; to suffer; to heat, be/become hot," tapati "burns;" L. tepere "to be warm," tepidus "warm;" PIE base *tep- "warm."
Kamnur, from kam, as above, + nur, → light.

faint early Sun paradox
  پارادخش ِ خورشید ِ تام ِ آغازین، ~ ~ کمتاب ِ ~   
pârâdaxš-e xoršid-e tâm-e âqâzin, ~ ~ kamtâb-e ~

Fr.: paradoxe du Soleil jeune faible   

The contradiction between a colder Sun (about 30% less luminous) some 4 billion years ago, as predicted by models, and the warm ancient Terrestrial and Martian climates derived from geological evidence.

faint; → early; → sun; → paradox.


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