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: 3 Search : frost
frost
  بشمه   
bašmé (#)

Fr.: givre, gelée   

Ice crystals that are formed by deposition of water vapor on a relatively cold surface.
The condition that exists when the temperature of the earth's surface and earthbound objects fall below freezing.

O.E. forst, frost "a freezing, becoming frozen, extreme cold," from P.Gmc. *frusta- (cf. O.H.G. frost, Du. vorst), related to freosan "to freeze."

Bašmé, from bašm "hoar-frost; dew," variants bažm, bašk, pašak "frost; dew," may be related to (štiyâni, Qomi dialects) bašand, vašand, vašan "rain" (vašan-sâl "rainy year"), (Lori, Laki) vašt "rain shower," (Gurâni) wašt, wišani "rain" (Tâti Karingâni) vurasten "to rain;" Av. -varšta- "rain," aiwi-varšta- "rained upon;" Skt. vars- "to rain," varsá- "rain;" M.Irish frass "rain shower, torrent;" Gk. eérse "dew," oureo "to urinate."

hoarfrost
  بشم   
bašm (#)

Fr.: givre, gelée   

Another name for → frost.

permafrost
  ماندبشم   
mândbašm

Fr.: pergélisol   

Layer of soil or rock, at some depth beneath the surface, in which the temperature has been continuously below 0°C from a few to several thousands of years. It exists where summer heating fails to reach the base of the layer of frozen ground.

From perma(nent) + → frost.

Mândbašm, from mând, → permanent, + bašm, → frost.