An Etymological Dictionary of Astronomy and Astrophysics

1. The force of attraction of the Earth on a given mass. → molecular weight; → weightlessness.
   

2. Statistics: A measure of the relative importance of an item in a statistical population. → weighted mean.
   

See also:

→ atomic weight, → counterweight, → mean molecular weight, → molecular weight, → statistical weight, → weight concentration, → weight fraction, → weight of a tensor density, → weight-fraction concentration, → weightlessness.

Etymology (EN): M.E., from O.E. gewiht, cf. O.N. vætt, O.Fris. wicht, M.Du. gewicht, Ger. Gewicht.

Etymology (PE): Vazn, loan from Ar. wazn.