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

فرهنگ ریشه شناختی اخترشناسی-اخترفیزیک

M. Heydari-Malayeri    -    Paris Observatory

   Homepage   
   


A B C D E F G H I J K L M N O P Q R S T U V W X Y Z

Number of Results: 2 Search : exo-
convexo-concave lens
  عدسی ِ کوژ-کاو   
adasi-ye kuž-kâv

Fr.: lentille convexo-concave   

A diverging lens having one surface convex and the opposite surface concave.

convex; → concave; → lens.

exo-
  برون-   
borun- (#)

Fr.: exo-   

Prefix meaning "outside; outer; external" used in the formation of compound words: exoplanet, exosphere, exocentric.

From Gk. exo "outside," used in forming scientific terms, → ex-.

Borun-, from borun "out, the outside" (Mid.Pers. bêron, from "outside, out, away" + rôn "side, direction;" Av. ravan- "(course of a) river").