absorption
  • The energy or matter retained or dissipated when one medium is exposed to another.
  • The absorption of only certain frequencies of electromagnetic or acoustic waves by a surface, object, or region. Also called selective absorption (1).
  • The absorption of only particles with given energies by a surface, object, or region. Also called selective absorption (2).
  • The absorption of only certain particles by a surface, object, or region. Also called selective absorption (3).

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