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: 13009 Search : far
clear
  رونه   
runé (#)

Fr.: clair   

1) Free from darkness, obscurity, or cloudiness.
2) Transparent; pellucid.
3) Without discoloration, defect, or blemish (Dictionary.com). → clear night.

M.E. clere, from O.Fr. cler, from L. clarus "clear, bright, distinct."

Runé, from Kurd. (Sorani) rûn "bright, clear," rûn kirdin "to explain," variant of rowšan, → bright.

clear night
  شب ِ رونه   
šab-e runé

Fr.: nuit claire   

A night sky without clouds, mist, or haze, atmospheric dust particles, and without city lights in which a sixth magnitude star is visible by naked-eye.

clear; → night.

clepsydras
  پنگان، پنگ   
pangân, pang

Fr.: clepsydre   

An ancient device for measuring time by marking the regulated flow of water through a small opening. A water clock.

L., from Gk. klepsudra, from kleptein "to steal" + hudor "water," PIE *wed- "water."

Pangân or pang was a clepsydra in Iran. It consisted of "a copper bason with a small hole in the bottom, for water in which it is placed to flow through, used for measuring time;" etymology unknown.

cliff
  تندان   
tondân (#)

Fr.: falaise   

A very high steep rock or ice face, especially one that runs along a coastline. → scarp.

M.E., O.E. clif (cf. O.S. clif, O.N. klif, O.H.G. klep, M.Du. klippe, Ger. Klippe "cliff, steep rock").

Tondân, from tond "swift, rapid, brisk," → scarp + -ân a suffix of nuance/relation.

climate
  کلیما، آب-و-هوا   
kelimâ, âb-o-havâ (#)

Fr.: climat   

The characteristic meteorological conditions (temperature, precipitation, and wind) and their extremes, of any place or region. In other words, weather patterns averaged over a given period of time to obtain a consistent pattern of the expected atmospheric conditions.

M.E. climat, from M.Fr. climat, from L. clima, climat- "region, slope of the Earth," from Gk. klima "region, zone," from base of klinein "to slope," thus "slope of the Earth from equator to pole," from PIE base *klei- "to lean," → inclination.

Kelimâ, loan from Fr., as above.
Âbohavâ, from âb, → water, + -o- "and" + havâ "weather" → air.

climatology
  کلیماشناسی   
kelimâšenâsi

Fr.: climatologie   

The scientific study of climates. More specifically, the analysis of weather condition trends over a relatively long period of time (past, present or future). Climatology is distinct from meteorology, which is associated with short-term weather system studies.

climate; → -logy.

clock
  ساعت   
sâat (#)

Fr.: horloge   

A device (not carried or worn) for measuring and showing the time. See also: → hour, → gnomon, → clepsydra.

M.E. clokke "clock with bells," from O.Fr. cloque "bell" (Fr. cloche, Du. klok, Ger. Glocke), M.L. clocca "bell," of Celtic origin.

Sâat from Ar.

clocking
  زمان‌بندی   
zamân bandi

Fr.:   

Successive risings and lowerings of voltage on the electrodes of a CCD in order to move the electrons from one pixel to the next.

clockwise
  ساعت‌سو   
sâ'atsu (#)

Fr.: dans le sens des aiguilles d'une montre   

In the same direction as the rotating hands of a clock when viewed from in front.

From → clock + wise "way, manner," O.E. wise (adj.), from wis, from P.Gmc. *wisaz (cf. Du. wijs, Ger. weise "wise"), PIE base *weid-/*wid- "to see, to know;" cf. Av vaeda "I know," Skt. veda "I know," Gk. oida "I know".

Sâ'atsu, from sâ'at, → clock, + su "direction," Mid.Pers. sôg, sôk "side, direction".

clog
  کتله   
katelé

Fr.: sabot   

A shoe made of wood.

M.E., of unknown origin.

Katelé, from (Tabari, Gilaki) katelé "wooden shoe," from katel "tree log, tree stump."

close
  کیپ   
kip (#)

Fr.: serré   

Having little or no space between elements or parts, as in → close binary, → close approach; tight and compact.

M.E. clos, closed, from O.Fr., from L. clausus, p.p. of claudere "to close."

Kip "close, tight" in spoken Pers.

close approach
  نزدش ِ کیپ   
nazdeš-e kip

Fr.: approche serrée   

In astronomy a general term to describe the positions of two or more objects that come unusually near one to another. In particular, regarding an asteroid's position with respect to Earth, when it is within the Moon's orbit.

close; → approach.

close binary star
  ستاره‌ی ِ دورین ِ کیپ   
setâre-ye dorin-e kip

Fr.: étoile binaire serrée   

A binary system in which the separation of the component stars is comparable to their diameters, so that they influence each other's evolution most commonly by the tidal forces.

close; → binary; → star.

close binary system
  راژمان ِ دورین ِ کیپ   
râžmân-e dorin-e kip

Fr.: système binaire serré   

A → binary system in which the distance separating the stars is comparable to their size. Most close binaries are spectroscopic binaries (→ spectroscopic binary) and/or eclipsing binaries (→ eclipsing binary). In most of them → mass transfer occurs at some stage, an event which profoundly affects the → stellar evolution of the components. The evolution of close binaries depends on the → initial masses of the two stars and their → separation. When the more massive star evolves into a → red giant first, material will spill through the inner point onto its companion, thereby affecting its companion's evolution. Mass transfer can also alter the separation and → orbital period of the binary star.

close; → binary; → system.

close encounter
  رویارویی ِ کیپ   
ruyâruyi-ye kip

Fr.: rencontre proche   

1) In a → star cluster, coming across of two stars so closely that their → orbits alter by their mutual → gravitational attractions.
2) As regards an → asteroid or → comet, a situation when it crosses the Moon's orbit and approaches the Earth with a risk of collision. See also → close approach, → encounter.

close; → encounter.

closed
  بسته   
basté (#)

Fr.: fermé   

Having boundaries; limited. → closed curve; → closed Universe.

Closed, p.p. of close, from M.E. clos, from O.Fr., from clore "to shut," from L. clausus, p.p. of claudere "to close."

Basté p.p.of 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.

closed curve
  خم ِ بسته   
xam-e basté (#)

Fr.: courbe fermée   

A curve whose ends are joined.

closed; → curve.

closed space
  فضایِ بسته   
fazâ-ye basté (#)

Fr.: espace fermé   

A bounded space the surface of which has the property that if one travels in any direction upon it without changing direction, one will end up back to the departure point. An example is a sphere. Triangles which lie on the surface of a closed space will have a sum of angles which is greater than 180°. An closed space has a positive → curvature. See also → closed Universe, → open space.

closed; → space.

closed system
  راژمان ِ بسته   
râžmân-e basté

Fr.: système fermé   

Thermodynamics: A system which can exchange energy with the surroundings but not matter. → open system; → isolated system.

closed; → system.

closed Universe
  گیتی ِ بسته   
giti-ye basté (#)

Fr.: Univers fermé   

A → cosmological model, first formulated by Friedmann and Lemaître, in which the Universe has a → finite size and lifetime and → space has a → positive → curvature, e.g. a Universe with a density greater than the → critical density. See also → closed space.

closed; → Universe.

<< < -es -iv -ti 21- a p abe abs abs acc acc acc act act ada adi ads aes Age Alb Alf ali all alp alt ama amp ana ang ang ann ano ant ant ape apo app app arb are ari art ass ast ast ast Atl ato ato Aug aut awa azi bac bal Bar Bar Bay bea Bep Bet BIC bij bin bio bir bla bla blu blu bol Boo bou Bq bre bri bub B[e cal cal can car car Cas cat cau cel cen Cer cha cha cha che chi CI cir cir cla cle clo clu co- cob 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 cov cra cri cro cry cum cur cyc d'A dar dat DC dea dec dec dec def def deh Del den dep des det deu dia dif dif dif dim dip Dir dis dis dis dis dis div dom dos dou dri Dum dus dyn dyn ear eas ecl Edd eff Ein eje ele ele ele ele eli emb emi Enc ene ens eph epo equ equ eru eth Eul eve evo exc exc exi exo exp exp ext ext Fab fai Fan fea fem fer fie fil fir fir fla flo flu foc For for fos fra fre fre fro fun g m Gal gal gal gas gau gel gen geo geo geo gho gla gno gra gra gra gra Gre Gre gro gyr had hal har Har HD hea hel hel Her Her Hic hig hip hol hor hos hov Hub hun hyd hyd Hyd hyp IC ide ill ima imp imp inc inc ind ind inf inf inf inf inj ins ins int int int int int int int int inv inv ion iro Isl iso iso Jac jet jud jur kel Kep kil Kle Kui Lag lam Lap Lar lat law lea len lep Lib lig lim lin lin Lio lit loc LOF lon Lor low lum lun Lup Lyo mac mag mag mag mag mag mai man Mar mas mas mat Max mea mec Mei Mer Mer met met Met mic mid Mil min Mir mix mod mod mol mon Mor mou mul muo mys nan nat nav nec Nep neu New New NGC nob nom non non nor not nuc nuc num Nyq obj obs obs oce oen OH omn opa ope opt opt opt orb ord Ori ort osc out ove oxi pai pan par par par par pas pea pen per per per per Per pet pha Pho pho pho pho Pic Pis Pla pla pla pla Ple poa pol pol pol pol pop pos pos pow pra pre pre pre pri pri pri pro pro pro pro pro pro pro Pto pul puz qua qua qua qua qui rad rad rad rad rad rad rai ran rar Ray rea Rea rec rec red red ref ref reg rel rel rel rep res res res res ret Rhe rid rig ris Roe Ros rot rub rut Sag sam sat sca sca Sch sci sea sec sec see sel sem sen ser Sgr sha shi sho sid sig sim sin Sir ske sli smo soc sol sol sol sol sol sou sou spa spe spe spe spe sph spi spl spu sta sta sta sta sta ste ste sti sto str Str sub sub sub sul sup sup sup sup sur sus sym syn sys Tam Tay tel ten Ter Tha the the the thi thr tib tid tim tok Tor tot tra tra tra tra Tri tri tro tru tur twi Typ ufo ult unc uni uni uni upl ura uti val var vec vel ver ver vil vir vis voc von wak Was wav wax wea wei whi Wie win WN6 wom X-r yea You zer zod > >>