An Etymological Dictionary of Astronomy and Astrophysics
English-French-Persian

فرهنگ ریشه شناختی اخترشناسی-اخترفیزیک

M. Heydari-Malayeri    -    Paris Observatory

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Number of Results: 4 Search : -on
-on
   -ا ُن   
-on (#)

Fr.: -on   

1) Suffix used in the names of subatomic particles (electron, proton, neutron, gluon, etc.), quanta (photon, graviton, etc.), and other minimal entities or components.
2) Suffix used in the meaning of inert gases (e.g. neon, krypton).

1) Probably extracted from → ion.
2) From Gk. -on, neuter of -os adj. ending.

edge-on galaxy
  کهکشان ِ پهلونما   
kahkašân-e pahlunemâ

Fr.: galaxie vue par la tranche   

A → spiral galaxy oriented edge-on to our view. → face-on galaxy.

edge; on, from O.E. on, variant of an "in, on, into" (cf. Du. aan; Ger. an; Goth. ana "on, upon"), from PIE base *ano "on" (cf. Av. ana "on;" Gk. ana "on, upon;" L. an-); → galaxy.

Kahkašân, → galaxy; pahlunemâ "showing the side," from pahlu, → side, + nemâ, from nemudan "to show, display," → display.

face-on galaxy
  کهکشان ِ رونما   
kahkešân-e runemâ

Fr.: galaxie vue de face   

A → spiral galaxy oriented such that it is viewed from above or below. → edge-on galaxy.

face; → on-; → galaxy.

one-to-one correspondence
  هم‌پتوازیِ یک-به-یک   
hampatvâzi-ye yek-be-yek

Fr.: correspondance un à un   

A relationship between two distinct sets of elements such that every member of the first set can be paired with a unique element in the second set; and every member of the second set can be paired with a unique element in the first set. Two sets so related are said to be isomorphic.

one; → correspondence.