An Etymological Dictionary of Astronomy and Astrophysics

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فرهنگ ریشه‌شناختی اخترشناسی-اخترفیزیک

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sporadic meteor
  شهاب ِ گهگاهی  
šahâb-e gahgâhi
Fr.: météore sporadique  

A meteor occurring occasionally, and not associated with any known meteor shower.

Etymology (EN): Sporadic, from M.L. sporadicus “scattered,” from Gk. sporadikos “scattered,” from sporas (genitive sporados) “scattered,” from spora “seed, a sowing;” related to sporos “sowing,” and speirein “to sow,” from PIE *sper- “to strew;” → meteor.

Etymology (PE): Šahâb, → meteor; gahgâhi “from time to time,” from gah, gâh “time; place”
(Mid.Pers. gâh, gâs “time;” O.Pers. gāθu-; Av. gātav-, gātu- “place, throne, spot;” cf. Skt. gâtu- “going, motion; free space for moving; place of abode;” PIE *gwem- “to go, come”).