loess

noun1

1. •
   Any sediment, dominated by silt, of eolian (wind-blown) origin.

   • The Yellow River got its name from the massive amount of fertile loess (yellow earth) which it has deposited in the wheat-growing North China Plain. — 1987

noun1

1. •
   Acronym of locally estimated scatterplot smoothing.

   • Locally weighted regression, or loess, is a procedure for fitting a regression surface to data through multivariate smoothing. — 1986