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
substantive
  زیریستین   
ziristin

Fr.: substantif   

Grammar: A word or word group functioning syntactically as a noun. Substantives include nouns and → nominals.

M.E., from L.L. substantivus "of substance or being," from L. substantia "being, essence, material," → substance, contraction of "noun substantive" from L. nomen substantivum ("independent noun") as opposed to nomen adiectivum "noun adjective" ("dependent noun").

Ziristin, from zirist, → substance, + -in a suffix of relation.

substellar
  زیر-ستاره‌ای   
zir-setâre-yi

Fr.: sous-stellaire   

1) Pertaining to a class of objects with a mass less than 8 percent that of the Sun.
2) → substellar point.

sub- + → stellar.

substellar limit
  حدّ ِ زیر-ستاره‌ای   
hadd-e zir-setâre-yi

Fr.: limite sous-stellaire   

The mass limit below which → hydrogen fusion cannot take place, and the cloud collapse cannot lead to the formation of a star. The limit is 0.075 → solar masses, corresponding to about 80 Jupiter masses.

substellar; → limit.

substellar object
  بر‌آخت ِ زیر-ستاره‌ای   
bart-e zir-setâre-yi

Fr.: objet sous-stellaire   

An object with a mass too small to sustain the → proton-proton chain and thus become a true star. See → brown dwarf.

substellar; → object.

substellar point
  نقطه‌ی ِ زیر-ستاره‌ای   
noqte-ye zir-setâre-yi

Fr.: point substellaire   

The point on the Earth, or other body, at which a particular star is directly overhead at a given time.

substellar; → point.

substellarity
  زیر-ستارگی   
zir-setâregi

Fr.: nature sous-stellaire   

The fact or condition, for an object, of not being capable to sustain the → hydrogen fusion because of its low mass (less than 0.08 → solar masses).

substellar + → -ity.

subsystem
  زیر-راژمان   
zir-râžmân

Fr.: sous-système   

A coherent component of a larger system.

sub-; → system

subtend
  زیرتانیدن   
zirtânidan

Fr.: sous-tendre   

To be opposite and delimit the extent of an angle or side of a geometric figure.

From L. subtendere "to stretch beneath," from → sub- + tendere "to stretch," cognate with Pers. târ "string," tanidan "to weave," as below.

Zirtânidan from zir-, → sub-, + tânidan from tân "thread, warp of a web," tâl "thread" (Borujerdi dialect), târ "thread, warp, string," related to tur "net, fishing net, snare," from tanidan, tan- "to spin, twist, weave;" Mid.Pers. tanitan; Av. tan- "to stretch, extend;" cf. Skt. tan- to stretch, extend;" tanoti "stretches," tántra- "warp; essence, main point;" Gk. teinein "to stretch, pull tight;" L. tendere "to stretch, as above; Lith. tiñklas "net, fishing net, snare," Latv. tikls "net;" PIE base *ten- "to stretch."

subtended angle
  زاویه‌ی ِ زیرتانیده   
zâvie-ye zirtânidé

Fr.: angle sous-tendu   

An angle whose two sides pass through the endpoints of an arc.

Subtended p.p. of → subtend; → angle.

subterrestrial point
  نقطه‌ی ِ زیر-زمینی   
noqte-ye zir-zamini

Fr.: point subterrestre   

The point on the surface of a celestial body where the star is perceived to be directly overhead (in zenith). The sublunar point and subsolar point are the equivalent points for the Moon and Sun, respectively.

sub-; → terrestrial.

subtle
  نغز   
naqz (#)

Fr.: subtil   

Fine or delicate in meaning or intent.

M.E. sotil, from O.Fr. sotil, soutil, subtil "adept, adroit; cunning, wise; detailed," from L. subtilis "fine, thin, delicate, finely woven," from → sub- "under" + -tilis, from tela "web, net, warp of a fabric," → texture.

Naqz "subtle, elegant, beautiful, excellent, good."

subtract
  زیرکرشیدن، کاهیدن   
zirkaršidan, kâhidan

Fr.: soustraire   

To take one number away from another; deduct. To perform the arithmetic operation of → subtraction.

From L. subtractus, p.p. of subtrahere "to draw from beneath, take away, draw off," from → sub- "from under" + trahere "to pull, draw."

Zirkaršidan, literally "to draw beneath," from zir-, → sub-, + karšidan "to draw, pul, drag," variant of kašidan "to draw, protract, trail, drag, carry;" Av. karš- "to draw; to plow," karša- "furrow;" Proto-Iranian *kerš-/*xrah- "to draw, plow;" cf. Skt. kars-, kársati "to pull, drag, plow;" Gk. pelo, pelomai "to move, to bustle;" PIE base kwels- "to plow."
Kâhidan, → decrease.

subtraction
  زیرکرشش   
zirkaršeš

Fr.: soustraction   

The operation of finding the difference between two numbers or quantities.

Verbal noun of → subtract.

subtractive
  زیرکرششی   
zirkaršeši

Fr.: soustractif   

1) Constituting or involving → subtraction.
2) Math.: Indicating or requiring subtraction; having a → minus sign.

subtract; → -ive.

subtractive color
  رنگ ِ زیرکرششی   
rang-e zirkaršeši

Fr.: synthèse soustractive   

Color produced by mixing pigments rather than light. Mixing all of the subtractive colors together results in the color black. See also → additive color.

subtractive; → color.

subtype
  زیر-گونه   
zir-guné

Fr.: sous-type   

A special type being part of a more general type, e.g. subtype 2 among G type stars. → subclass.

sub-; → type.

succeed
  کامیابیدن   
kâmyâbidan

Fr.: réussir   

1) To happen or terminate according to desire; turn out successfully; have the desired result.
2) To accomplish what is attempted or intended (Dictionary.com).

M.E. succeden, from O.Fr. succeder "to follow on" and directly from L. succedere "come after, follow after; go near to; come under; take the place of," also "go from under, mount up, ascend," hence "get on well, prosper, be victorious," from → sub- "next to, after" + cedere "to go, move" → process.

Kâmyâbidan, back formation from kâmyâbi, → success.

success
  کامیابی، کامیافت   
kâmyâbi (#), kâmyâft

Fr.: succès   

1) The favorable or prosperous termination of attempts or endeavors; the accomplishment of one's goals.
2) A performance or achievement that is marked by success, as by the attainment of honors (Dictionary.com).

From L. successus "an advance, a coming up; a good result, happy outcome," noun use of p.p. of succedere "come after," from suc-, → sub-, + ceder "to go, move," → process.

Kâmyâbi, literally "acquiring, obtaining, finding one's desire, wish," from kâm "desire, wish," → despite, + yâbi, from yâftan "to obtain, find," → interpolation.

successful
  کامیاب   
kâmyâb (#)

Fr.: réussi, couronné de succès   

1) Achieving or having achieved success.
2) Resulting in or attended with success.

success + -ful a suffix meaning "full of, characterized by."

successive
  پیاپی   
payâpey (#)

Fr.: successif   

Following in order or in uninterrupted sequence; e.g. → method of successive approximations.

M.E. from M.L. successivus, from successus, p.p. of succedere "come after, go near to," from → sub- "next to, after" + cedere "to go, move."

Peyâpey "successive," from pey "after; step," related to "foot" (Mid.Pers. pâd, pây, Av. pad-, Skt. pat, Gk. pos, gen. podos, L. pes, gen. pedis, P.Gmc. *fot, E. foot, Ger. Fuss, Fr. pied; PIE *pod-/*ped-) + -â- epenthetic vowel + pey, as explained.

<< < -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 > >>