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: 13176 Search : in
collect
  ۱) گرد‌آوردن، انباشتن؛ ۲) گرد‌آمدن   
1) gerdâvardan (#), anbâštan (#); 2) gerdâmadan

Fr.: 1) collecter, réunir, accumuler, ramasser; 2) s'accumuler, se réunir   

1a) To bring together into a one body or place.
1b) To gather and gradually accumulate in a place.
2) to gather together; assemble.

From O.Fr. collecter, from L. collectus, p.p. of colligere "gather together," from → com- "together" + legere "to gather," cf. L. lignum "wood, firewood," lit. "that which is gathered"; cognate with Gk. legein "to say, tell, declare," from PIE *leg- "to pick together, gather, collect"

1) Gerdâvardan "to collect," from gerd "round; around," → disk; alternatively, ultimately from PIE base *ger- "to gather," cf. Iranian ger-, gor-, etc. "to gather," → category, + âvardan "to bring," → production.
Anbâštan, anbârdan "to fill, to replete;" Mid.Pers. hambāridan "to fill;" from Proto-Iranian *ham-par-, from prefix ham-, → com-, + par- "to fill;" cf. Av. par- "to fill," parav-, pauru-, pouru- "full, much, many;" O.Pers. paru- "much, many;" Mid.Pers. purr "full;" Mod.Pers. por "full, much, very;" PIE base *pelu- "full," from *pel- "to be full;" cf. Skt. puru- "much, abundant;" Gk. polus "many," plethos "great number, multitude;" O.E. full.
2) Gerdâmadan "to come together," with âmadan "to come," → efficiency.

collect and collapse model
  مدل ِ انباشت و رمبش   
model-e anbâšt va rombeš

Fr.: modèle d'accumulation et d'effondrement   

A → sequential star formation model involving → massive stars and → H II regions. The energetic ultraviolet photons from a massive star born in a → molecular cloud drive a spherical → ionization front radially outward from the star at a velocity much higher than the → sound speed in the cold neutral gas. The supersonic expansion of the H II region through the surrounding neutral gas creates a → shock front, sweeping up an increasingly massive and dense shell of cool neutral gas. This is the collect phase of the process in which the H II region simply acts like a snowplough. If the expansion of the H II region continues for long enough, the surface density of the shell increases to the point where the shell becomes self-gravitating. The shell is then expected to collapse and fragment. Individual fragments may then enter a non-linear collapse phase, possibly forming massive stars. This model was first proposed by Elmegreen & Lada (1977, ApJ 214, 725), who used a one-dimensional analysis. Whitworth et al. (1994, MNRAS, 268, 291) developed an analytical model for the collect and collapse process which predicts the fragmentation time, the size, number, and mass of the fragments (see also Elmegreen 1998, in ASP Conf. Ser. 148, Origins, eds. Woodward et al., p. 150 and references therein). → stimulated star formation, → triggered star formation.

collect; → collapse; → model.

collecting area
  پهنه‌ی ِ گرد‌آور   
pahne-ye gerdâvar

Fr.: surface collectrice   

Of an interferometric telescope made up of several mirrors, the hypothetical mirror created by the combination of the individual mirrors.

collect; → area.

collection
  گرد‌آورش، گرد‌آورد، گرد‌آمد، گرد‌آیند   
gerdâvareš, gerdâvard, gerdâmad, gerdâyand (#)

Fr.: collection   

1) The act or process of collecting.
2) A group of objects or works to be seen, studied, or kept together.

Verbal noun from → collect.

collective
  گرد‌آمدی   
gerdâmadi

Fr.: collectif   

Forming a whole; of or characteristic of a group taken together.

collect + → -ive.

collective behavior
  رفتار ِ گرد‌آمدی   
raftâr-e gerdâmadi

Fr.: comportement collectif   

1) The whole behavior of a system of many interacting components, which differs from that of the individual components. Some classical examples are the → many-body problem, → phase transition, most of thermodynamic phenomena, collective oscillations occurring in solids, etc. Physics dealt with collective behavior much earlier than the term collective behavior was even coined.
2) Sociology: The more or less unpredictable act of people when being in group, which is totally different from the behavior they would have if acted individually.
3) Biology: A large number of group phenomena such as pattern formation, self organization, trail formation, and synchronization seen among many living creatures.

collective; → behavior.

collective star formation
  دیسش ِ گرد‌آمدی ِ ستارگان   
diseš-e gerdâmdi-ye setâregân

Fr.: formation collective d'étolies   

Formation of stars, especially → massive stars, in group as opposed to individual formation.

collective; → star; → formation.

collectivism
  گرد‌آمدگرایی   
gerdâmadgerâyi

Fr.: collectivisme   

1) The principle of ownership of the means of production, by the state or the people.
2) A social system based on this principle (Dictionary.com).

collective; → -ism.

collectivity
  گرد‌آمدیگی   
gerdâmadigi

Fr.: collectivité   

1) Collective character.
2) A collective whole.

collective; → -ity.

collectivization
  گرد‌آمدش، گرد‌آمدکرد   
gerâmadideš, gerâdmad-kard

Fr.: collectivisation   

The process of forming collectives or collective communities where property and resources are owned by the community and not individuals (TheFreeDictionary.com).

Verbal noun of → collectivize.

collectivize
  گرد‌آمدیدن، گرد‌آمدکردن   
gerâmadidan, gerâdmad kardan

Fr.: collectiviser   

To organize (a people, industry, economy, etc.) according to the principles of → collectivism (Dictionary.com).

collective; → -ize.

collector
  گرد‌آور   
gerdâvar (#)

Fr.: collecteur   

A device that collects: a solar energy collector; a dust collector.
The semiconductor region in a bipolar junction transistor in which most of the current flows.

From → collect + -or.

collide
  همکوبیدن   
hamkubidan

Fr.: se heurter, heurter, entrer en collision   

1) To strike together with forceful impact, such as two astronomical objects.
2) Of two or more atomic particles, to approach closely resulting in an abrupt change of momentum or exchange of energy.

From L. collidere "to strike together," from col- variant of → com- "together" + laedere "to strike," of unknown origin.

Ham- "together, with," → com- + kubidan, kuftan "to beat, strike, pound," kus "drum," Mid.Pers. kôftan and kôstan "to beat, strike."

collider
  همکوبگر، همکوبنده   
hamkubgar, hamkubandé

Fr.: collisionneur   

A particle accelerator in which two beams of particles are forced to collide head on.

Agent noun from → collide + → -or.

colliding-beam accelerator
  شتابگر با تابه‌ی ِ همکوبنده   
šetâbgar bâ tâbe-ye hamkubandé

Fr.: accélérateur à faisceau de collision   

Same as → collider.

collide; → beam; → accelerator.

collimate
  همراستاییدن، همراستا کردن   
hamrâstâyidan, hamrâstâ kardan

Fr.: collimater   

To pack and align photons or atomic particles parallel to a particular direction.

L. collimatus, p.p. of collimare, alteration of collineare "to make straight," from → com- + linea, → line.

From ham- "together, with," → com- + râstâ, → direction, + -idan infinitive suffix, kardan "to do," → work.

collimated
  همراستا   
hamrâstâ

Fr.: collimaté   

Made accurately parallel or brought into line.

Past participle of → collimate.

collimated beam
  تابه‌ی ِ همراستا   
tâbe-ye hamrâstâ

Fr.: faisceau collimaté   

A → beam of → photons or → subatomic particles with a narrow → cross section that has little or no spatial spread.

collimated; → beam.

collimated jet
  شان ِ همراستا   
šân-e hamrâstâ

Fr.: jet collimaté   

A beam of particles in which every particle would have exactly the same direction of travel, thereby the jet moves without → dispersion. Collimated jets of → plasma are associated with → protostars.

collimated; → jet.

collimation
  همراستایش   
hamrâstâyeš

Fr.: collimation   

1) The process of restricting a beam of photons or particles to a given area.
2) The process of adjusting a telescope to place all optical elements in precise alignment. → align a telescope.

Verbal noun of → collimate.

<< < -es -it -sc 201 951 abe abs abs aca acc acc aco act ada adh ado aer aft air Alf alg alk alp Alt alt amb ana And ang ani ann ant ant ant apo app app Apu arc arg Arn art ass ast ast ast atm ato att aur aut avo azi bac bal bar bar bat Bea Bel bet bia big bin bio Bir bla bla blo Blu bol Boo bou box bre Bri bro bur cal cal Can cap car Car cat cau cel cen cen cha Cha cha che Chi chr cir cir civ cla clo clo CMB coa coe 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 cri cro cry cul cur cyc D l dar dat day dea dec dec dec def def deg Del Den dep der det deu dew dic dif dif dil dip dir dis dis dis dis dis diu dog Dop dou Dra Dsc dus dwa dyn Dys Ear ecc eco edg egg Ein Ela ele ele ele ele ell eme emp enc eng ent epi equ equ equ eru eth Eur eve exa exc exe exi exo exp ext ext ext fab fai Fan fea fem fer fie fil fir fir fla fli flu foc for for for fra fre fre fri fun fuz gal gal gal Gam gau Gau gen geo geo geo geo Gib glo gov gra gra gra gra gre gro Gui H-a hal Ham har Hay hea hei hel Hel her het hie hig hoa hom hor hot Hub Hug hur hyd hyd hyl hyp ice ide ima ima imp imp inc inc ind ine inf inf inf ing inn ins ins int int int int int int int int inv inv ion iro Isl iso iso Jab jet Jov Jup Kar Kep kil Kip Kra Lag Lam Lan Lar las law lea Leg Leo lev lig lim lin lin lin lit loc loc log Lor low lum lun lun Lym Mac mag mag mag mag mag mai Mal map mas mas mat Mau mea mea med Men mer Mes Met met mic mic Mie mil min Mir mix mod mol mom Moo mor mov mul mur n-b nan nat nea neg Ner neu new New NGC noc nom non non nor nor nuc nuc nul nut obj obl obs occ oct off old one ope opp opt opt orb ord org Ori osc oth ove Owl P-s Pal par par par par Pas pat pec pen per per per per per Pha pha pho pho pho phy pie pix Pla pla pla pla Pli Poi pol pol pol pol por pos pos pow pre pre pre pre pri pri pri pro pro pro pro pro pro pro pub pul pyc 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 ren res res res res ret rev Ric rig rin roc roo rot rot rur S5- Sal sat sca sca Sch sci Scu sec sec sed sel sel sem seq set sha she sho sid sie sil sim sin sit sky slo sno sod sol sol sol sol son sou spa spa spe spe spe spe sph spi spo squ sta sta sta sta ste ste ste Sti sto str str sub sub sub sul sup sup sup sup sur sur syl syn sys tal Tay tel ten ter tex the the the the Tho thr tid tim Tit too Tor tra tra Tra tra Tra tri Tri tru tub tur two Typ ult ult unc uni uni uni upl 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 > >>