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 : tight
tight
  تنگ   
tang (#)

Fr.: serré   

Firmly or closely fixed in place. → compact.

M.E. thight, from O.N. thettr "watertight, close in texture, solid" (cf. second element in O.E. metethiht "stout from eating;" M.H.G. dihte "dense, thick," Ger. dicht "dense, tight," O.H.G. gidigan, Ger. gediegen "genuine, solid, worthy"), from PIE base *tenk- "to become firm, curdle, thicken;" cf. Ir. techt "curdled, coagulated," Lith. tankus "close, tight;" cognate with Pers. tang "tight," as below.

Tang "tight; narrow, straight; tight," also "horse girth, a strap for fastening a load" (Mid.Pers. tang "tight, narrow"), tanjidan "to squeeze, press, pull together;" cf. Skt. tanákti "draws together, contracts;" cognate with E. tight, as above; PIE base *tenk- "to become firm, curdle, thicken."

tight star cluster
  خوشه‌ی ِ ستاره‌ای ِ تنگ   
xuše-ye setâreyi-ye tang

Fr.: amas stellaire serré   

A cluster of stars in which members are closely situated so that high resolution observations are required to distinguish them individually.

tight; → star cluster.

tightly bound binary star system
  راژمان ِ ستاره‌ای ِ درین ِ تنگ بندیده   
râžmân-e setâre-yi-ye dorin-e tang bandide

Fr.: système d'étoiles binaire très lié   

close binary star.

tight; → bound system; → binary star.