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: 46 Search : side
sidero-
  آهن-، سیدرو-   
âhan-, sidero-

Fr.: sidéro   

A combining form meaning "iron," used in the formation of compound words; variant sider- before a vowel.

From Gk. sideros "iron."

Âhan-, from âhan, → iron.
Sidero-, loan from Gk., as above.

siderolite
  سیدرولیت   
siderolit (#)

Fr.: sidérolithe, sidérolite   

The category of → meteorites commonly referred to as → stony-irons. The three classes of siderolites are → lodranites, → mesosiderites, and → pallasites.

From Gk. sidero-, from sideros "iron" + -lite a combining form used in the names of minerals.

siderophile
  آهندوست، سیدرندوست   
âhandust, siderodust

Fr.: sidérophile   

siderophile element.

sidero-; → -phile.

siderophile element
  بن‌پار ِ آهندوست   
bonpâr-e âhandust

Fr.: élément sidérophile   

In the → Goldschmidt classification, any → chemical element that has an → affinity to combine with → iron rather than some other element. These elements are concentrated in the → Earth's core. The group includes → iron (Fe), → nickle (Ni), → cobalt (Co), → platinum (Pt), → gold (Au), → tin (Zn), and → tantalum (Ta). The siderophile elements include → highly siderophile element (HSE).

siderophile; → element.

siderostat
  اخترداشتار   
axtardâštâr

Fr.: sidérostat   

A mirror arrangement with clock drive that reflects light from a celestial body to a fixed position. → coelostat; → heliostat.

From L. sidero-, from sidus (genitive sideris) "star, constellation" + -stat prefix denoting something that stabilizes, keeps, fixes, from -stata, from Gk. -states "one that causes to stand," or statos "standing," from *sta- "to stand."

Axtardâštâr, from axtar, → star, + dâštâr "holder, maintainer," from dâštan "to hold, maintain; to have; to possess;" Mid.Pers. dâštan; O.Pers./Av. dar- "to hold, keep back, maintain, keep in mind;" cf. Skt. dhr-, dharma- "law;" Gk. thronos "elevated seat, throne;" L. firmus "firm, stable;" Lith. daryti "to make;" PIE base *dher- "to hold, support."

true sidereal time
  زمان ِ اختری ِ راستین   
zamân-e axtari-ye râstin

Fr.: temps sidéral vrai   

The → sidereal time with respect to the → true equinox.

true; → sidereal; → time.

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