An Etymological Dictionary of Astronomy and Astrophysics
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فرهنگ ریشه شناختی اخترشناسی-اخترفیزیک

M. Heydari-Malayeri    -    Paris Observatory

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Number of Results: 13116 Search : far
applied physics
  فیزیک ِ کاربردی   
fizik-e kârbordi (#)

Fr.: physique appliquée   

A set of topics in physics intended for a particular or practical use. Applied physics programs are usually interfaces between pure physics and technology.

Past participle of → apply; → physics.

apply
  آتاهیدن، به کار بردن   
âtâhidan, bé kâr bordan (#)

Fr.: appliquer   

To make use of; to put to use especially for some practical purpose.
To put into operation or effect.
To lay or spread on; to be placed or remain on.
To make a request especially in the form of a written → application.

From M.E. ap(p)lien, from O.Fr. aploiier "apply, use, attach," from L. applicare "to attach to, connect;" figuratively, "devote (oneself) to, give attention," from → ad- "to" + plicare "to fold," → explain.

Âtâhidan, from â- intensive/nuance prefix, + tâh "fold, plait, ply" (on the model of L., as above, → explain); Mid.Pers. tâg "piece, part" + -idan infinitive suffix.
Bé kâr bordan, from "to; for; in; on; with; by; according to," → ad hoc; kâr, → work, bordan "to carry, bear, conduct, take," → range.

apprehend
  درنوتیدن   
darnutidan

Fr.: aprréhender   

1) Arrest (someone) for a crime.
2) → Understand or → perceive. Often to hold in opinion but without positive certainty.

From L. apprehendere "to take hold of, grasp," from → ad- "to" + prehendere "to seize," → prehend.

apprehension
  درنوتش   
darnuteš

Fr.: appréhension   

1) Anxiety or fear that something bad or unpleasant will happen.
2) Understanding; grasp.
3) The action of arresting someone (Oxford Dictionary, lexico.com).

Verbal noun of → apprehend.

approach
  ۱) نزدیدن، نزدیک شدن؛ ۲) نزدش   
1) nazdidan, nazdik šodan; 2) nazdeš

Fr.: 1) approche; 2) s'approcher, approcher   

1) (v.intr.) To come near or nearer, as in space or time.
(v.tr.) To come or go near or nearer to in quality, character, time, or condition.
2) (n.) The act of drawing near; nearness or close approximation; the method used or steps taken in dealing with or accomplishing.

M.E. approchen, from O.Fr. aprochier, from L. appropiare, from ad- "to" + propius "nearer," comparative of prope "near".

1) Nazdidan from nazd "near," Mid.Pers. nazd, Av. nas- "to come near, approach, reach," nazdišta- "nearest, next," nazdyo "nearer to," compare with Skt. nas- "to approach, to reach" + -idan "infinitive forming suffix".
2) Nazdeš, from nazd, nazdidan + -eš "noun forming suffix."

approval
  آسند   
âsand

Fr.: approbation   

The act of approving; approbation; formal permission or sanction.

approve; → -al.

approve
  آسندیدن   
âsandidan

Fr.: approuver   

To confirm or sanction formally; ratify.

M.E., from O.Fr. aprover "approve, agree to," from L. approbare "to assent to as good, regard as good," from → ad- "to" + probare "to try, test something (to find if it is good)," from probus "honest, genuine," → prove.

Âsandidan, from â- + sandidan, as in pasandidan (with pati-) "to cherish, approve;" ultimately from Proto-Ir. *sand- "to appear, seem good;" cf. Av. sənd- "to appear, seem (good);" Manichean Mid.Pers. shyn "apparent, prominent, splendid;" Mid.Pers. passand "to approve;" Khotanese sad- "to appear, seem, show;" Skt. chand- "to appear, please;" L. censere "to appraise, value, judg" (Cheung 2007).

approximate
  ۱) نزدین؛ ۲) نزدینیدن   
1) nazdin (#); 2) nazdinidan

Fr.: 1) approximatif; 2) s'approcher   

1) Nearly exact or correct; near or approaching a certain state, condition, or goal.
2) (v.tr.) To come close to; be nearly the same as.
(v.intr.) To come near or close, as in degree, nature, or quality.

From L. approximatus, p.p. of approximare "to draw near to," from ad- "to" + proximare "come near," from proximus "nearest," superlative of prope "near".

1) Nazdin from nazd "near" + -in, adjective making suffix, in particular superlative, as in bišin, kamin, kehin, mehin, etc.
2) Nazdinidan from nazdin, as above, + -idan infinitive forming suffix.

approximately
  نزدینانه   
nazdinâné

Fr.: approximativement   

Not exactly, but nearly or roughly.

Adverb of → approximate.

approximation
  نزدینش   
nazdineš

Fr.: approximation   

1) General: A guess or estimate; nearness in space, position, degree.
2) Math., Physics: Result that is not quite exact, but is within the limits of accuracy required for a given purpose.

Approximation, verbal noun of → approximate.

Nazdineš, verbal noun of nazdinidan, → approximate.

appulse
  همتاخت   
hamtâxt

Fr.:   

A situation in which two heavenly bodies apparently approach each other. A close → conjunction in which no → occultation actually occurs.

L. appulsus, from appellere, appulsum "to drive to," from ad, → ad- + pellere "to drive".

Hamtâxt from ham- "against; together" + tâxt, from tâxtan "to rush upon, run, assault".

apsidal
  هباکی   
habâki

Fr.: absidial   

Relating to an → apsis.

apsis; → -al.

apsidal motion
  جنبش ِ هباکی   
jonbeš-e habâki

Fr.: mouvement apsidial   

Rotation of the → line of apsides in the plane of the orbit in the same direction as the → revolution of the → secondary body. The major axis of the Earth's orbit rotates by 11.6 arcseconds per year.

apsidal; → motion.

apsidal precession
  پیشایانِ هباکی   
pišâyân-e habâki

Fr.: précession absidiale   

advance of perihelion, → relativistic precession.

apsidal; → precession.

apsides, line of
  خط ِ هباک‌ها   
xatt-e habâkhâ

Fr.: ligne des apsides   

The line connecting the two apsides, i.e. the major axis of an elliptical orbit. → apsis.

Apsides, pl. of → apside; → line.

apsis (pl. apsides)
  هباک   
habâk

Fr.: apside   

The point of greatest or least distance of the orbit of a celestial body from a center of attraction. The closest point is the → periapsis, the further point the → apoapsis.

L. apsis "arch, vault," from Gk. hapsis "loop, arch," from haptein "fasten together".

Mod.Pers. habâk "top of the head; the summit of a mountain".

apt
  نیاو   
niyâv

Fr.: approprié   

Exactly suitable; appropriate; suited to a purpose.

M.E., from L. aptus "fitted, suitable, fastened," from p.p. of *apere "to fasten;" akin to Hittite hap- "to attach;" PIE *ap- "to grasp, take, reach".

Niyâw "apt, suitable, appropriate," from Mid.Pers.

Apus
  مرغ ِ بهشتی   
Morq-e behešti (#)

Fr.: Oiseau de paradis   

The Bird of Paradise. A constellation in the southern hemisphere, at R.A. = 16 h, Dec. = -75°. Abbreviation: Aps; genitive form: Apodis.

L. apus "a kind of swallow," from Gk. apous "without feet, sand martin," from → a- "without" + pous "foot".

Morq-e behešti "bird of paradise," from morq "bird" + behešt "paradise".

Aquarids
  آبکشیان   
Âbkašiyân

Fr.: Aquarides   

Several → meteor showers that have their → radiants in the constellation → Aquarius. The main showers are:
1) Eta Aquarids, which occurs early in May and is apparently associated with → Halley's comet, and
2) Delta Aquarids occurring in early August.

Aquarids, from → Aquarius constellation + → -ids suffix denoting "descendant of, belonging to the family of."

Âbkašiyân, from Âbkaš + -iyân, → -ids.

Aquarius
  آبکش، ریزنده‌ی ِ آب   
Âbkeš, Rizande-ye âb (#)

Fr.: Verseau   

The Water Bearer. An extended southern constellation composed of rather faint stars (R.A. about 23h, Dec. about -15 deg). One of the signs of the → Zodiac, it is surrounded by → Pegasus, → Equuleus, and → Delphinus to the north, → Aquila to the west, → Pisces Austrinus and → Sculptor to the south, and → Cetus to the east. Abbreviation: Aqr, genitive from: Aquarii.

Aquarius, L. "water carrier," literally "of the water," translation of Gk. Hydrokhoos "the water-pourer," old Gk. name of this constellation.

Âbkeš "water carrier or drawer," from âb "water" (Mid.Pers. âb "water;" O. Pers. ap- "water;" Av. ap- "water;" cf. Skt. áp- "water;" Hitt. happa- "water;" PIE āp-, ab- "water, river;" cf. Gk. Apidanos, proper noun, a river in Thessalia; L. amnis "stream, river" (from *abnis); O.Ir. ab "river;" O.Prus. ape "stream;" Lith. upé "stream;" Latv. upe "brook") + keš "drawer," contraction of kešandé, from kešidan/kašidan "to carry, draw, extract, trail, drag" (Mid.Pers. kešidan "to draw, pull;" Av. karš- "to draw; to plough," karša- "furrow;" cf. Skt. kars-, kársati "to pull, drag, plough," Gk. pelo, pelomai "to be busy, to bustle;" PIE base kwels- "to plow").

<< < -es -iv -ti 21 a p abe abs abs aca acc acc acr act ada adh Adr aer aga air Alf Alg alk Alp alt alu amm ana And ang ani ano ant ant Ap apo app app Aqu Arc arg arr asc ass ast ast asy atm ato att aur aut axi B-m bad Bal bar bar Bay Bed ber Bet bif bim bin bio bis bla ble blu Bod Bol bor bou Bra Bre bro bul C-t Cal Cam can car Car Cas cat cav cel cen cer Cha cha Cha che chl Cir cir cir Cla cli clo clu co- coc coh col col col Com com com com com com com com Com con con con con con con con con con con con con coo Cor Cor cor cos cos cos Cou cou Cra Cre cri cro cub cur cyc cyl Dan dat Dav de- Deb dec dec dee def deg del Den den der det deu dew dic dif dif dil Dip dir dis dis dis dis dis diu dod Dop dou Dra dua dus dwa dyn DZ Ear ecc eco edi EHB Ein ela ele ele ele ele ell eme emp end Eng ent epi equ equ era ESP eth Eur evi exa exc exe exi exp exp ext ext ext fac fal far fec Fer fer fie fin fir fis fla Flo flu fog for for Fou fra fre fre Fro fun G s Gal gal gal Gar gau geg gen geo geo geo ger gla gly gra gra gra gra gra Gre gro GYR Had Hal hap Har HD hea hel hel Hen Her hex hig Hil hol Hoo hor hou Hub hum hyb hyd hyd hyp hys ide ign ima imp imp in- inc Ind ind ine inf inf inf ini ins ins ins int int int int Int int int int inv ion iri irr iso iso iso Jea Jor jum K c Kep Ker kin kno lab Lam Lan Lap las lat Le lef len lev lig lig lin lin lin liq Lit loc log lon lou LS lun lun Lym M s Mag mag mag mag mag mag maj man Mar mas mas mat May mea mec mel mer mes met met met mic mid mil Min Mir mix mod mod mol mon mor mov mul mur mys nan nat nav nec Nep neu New New NGC nob nom non non nor nos nuc nuc num nut obj obl obs occ oct off oli oni ope opp opt opt orb ord org orp osc out ove oxi P-w pal par par par par Pas pat pej per per per per per per pha Phe pho pho pho phy pin pla Pla pla pla pla plu poi pol pol Pol pol por pos pot Poy pre pre pre pre pri pri pri pro pro pro pro pro pro Psa pul pum Q i qua qua qua qua R A rad rad rad rad rad rad Ram Ran rat rea rea rec rec red red ref ref reg rei rel rel rem rep res res res ret rev Rho Rie ril riv rog Ros rot rul S A Sag sam sat sca sca Sch Sco Sec sec sec seg sel sem sen set Sha sha shi sho sid sig sim sin Sir ske sli Smo soc sof sol sol sol sol sou sou spa spe spe Spe spe sph spi Spi spr sta sta sta sta sta ste ste ste Sto str str sub sub sub suc sun sup sup sup sup sur swa syn syn tac tas tel tem ter tes the the the the thi thr tid til tip ton tor tou tra tra tra tra Tri tri tru tsu tur two Typ UHE ult unc uni uni uni upg ura uti val var vec Vel ver Ver vie Vir vis vis vol W-R war wav wav wea Wei wha wid win WN3 Wol wri xen yok zen zij > >>