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: 5 Search : ni-
ni- (PIE)
  ن-، نی-   
ne-, ni- (#)

Fr.:   

PIE prefix *ni- "down, below."

E. nether is from this PIE root; M.E. nethere, O.E. neothera, nithera "down, downward, below, beneath" (cf. O.S. nithar, O.N. niðr, O.Fris. nither, Du. neder, Ger. nieder); akin to Pers. ne-, ni-, as below.

Mod.Pers. ne-, ni- "down, below" (as in negâh "look, watch," nešastan "to sit down," nehoftan "to conceal," nehâdan "to place, put," nemudan "to display," nefrin "curse," etc.); Mid.Pers. ni-, O.Pers. preposition and verbal prefix ni- "down;" Av. nī- "down, in, into;" cf. Skt. ni- "down," nitaram "downward;" Gk. neiothen "from below" (from ne-[io]- "below" + -then "from, since;" other usage examples of -then: po-then "from where," paidio-then "since childhood," panta-ho-then "from everywhere."); E. nether, as above.

omni-
  ویسپ-   
visp- (#)

Fr.: omni-   

All, universally.

L. omni-, combining form of omnis "all, every," of unknown origin.

Visp-, from Mid.Pers. visp- "all;" O.Pers. visa-, vispa- "all;" Av. vīspa- "all, every, entire, universal" (vīspô.ayāra- "lasting all the days," vīspô.vīδvah- "knowing everything, omniscient"); cf. Skt. vīśva- "all, every; whole, universal."

plani-
  تخت-   
taxt- (#)

Fr.: plani-   

Variant of → plano-, as in → planisphere.

plane.

Ruffini-Horner method
  روش ِ روفینی-هورنر   
raveš-e Ruffini-Horner

Fr.: méthode de Ruffini-Horner   

A method for finding the value of a → polynomial given by a real number and deriving its → roots. It consists essentially of factoring the polynomial in a nested form. Also known as → nested multiplication.

Named after Paolo Ruffini (1765-1822) and William Horner (1786-1837), who independently elaborated the method; → method.

uni-
  یک-   
yek- (#)

Fr.: uni-   

A prefix with the meaning of "one" occurring in loanwords from L., such as → uniform, → uniaxial, → universe, etc.

From uni- a combining form meaning "one," from L. uni-, from unus, → one;

Yek-, from yek, → one.