An Etymological Dictionary of Astronomy and Astrophysics

1. (n.) A general term for any river, brook, rivulet or course of running water.
   A steady flow of a fluid, small solid particles, or radiant energy. → Magellanic stream.

Related concepts: → current (jarayân = جریان); → flow (tacân = تچان).
2) (v.) To move or proceed continuously like a flowing stream.

Etymology (EN): O.E. stream “a course of water;” cf. O.S. strom, O.N. straumr, Dan. strøm, Swed. ström, Norw. straum, Du. stroom, O.H.G. stroum, Ger. Strom “current, river,” from PIE base *sreu- “to flow;” cf. Pers. rud, from Mid.Pers. rôd “river;” O.Pers. rautah- “river;” Skt. srotas- “river,” sru- “to flow;” Pali sota- “stream, flood;” Gk. rhoos “a stream, a flowing,” from rhein “to flow.”

Etymology (PE): 1) Râbé, from dialectal Gilaki râbé “flowing of water or liquid,” Semnâni rové “a stream of water flowing beyond control,” Pers. colloquial râ (in râ gereftan “to overflow, flow beyond control”); probably from PIE base *rei- “to flow;” cf. Skt. ray- “to flow, run,” raya- “stream;” L. rivus “stream, brook;” O.C.S. reka “river;” M.Ir. rian “river, way;” Goth. rinnan “run, flow,” rinno “brook;” M.L.G. ride “brook;” O.E. riþ “stream.”

2. Râbidan infinitive of râbé.