Not essential; supplemental; superfluous v. - attract and hold to surface (minute particles of mixture or molecules of gas or liquid). adsorbate, aduncous, aduncate adj. - hook-shaped; crooked. aduncity, adust adj. - (sun) burnt or scorched; dried up by heat; gloomy, sad.    From Wordnik.com.  [xml's Blinklist.com] Reference