#sorption  the process in which one substance takes up or holds another (by either absorption or adsorption)
  supertype:  #natural_process__naturalproces__natural_action__naturalaction__action__activity  a process existing in or produced by nature (rather than by the intent of human beings); "the action of natural forces"; "volcanic activity"
  subtype:  #soaking_up__soakingup__absorption  (chemistry) a process in which one substance permeates another; a fluid permeates or is dissolved by a liquid or solid
     subtype:  #imbibition  (chemistry) the absorption of a liquid by a solid or gel
  subtype:  #adsorption__surface_assimilation__surfaceassimilation  the accumulation of molecules of a gas to form a thin film on the surface of a solid
     subtype:  #chemisorption  adsorption (especially when irreversible) by means of chemical instead of physical forces; "chemisorption of gaseous nitrogen on iron catalysts"

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