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Medical Term:


Pronunciation: ab-sōrp′shŭn


  1. The taking in, incorporation, or reception of gases, liquids, light, or heat.
  2. In radiology, the uptake of energy from radiation by the tissue or medium through which it passes.
  3. Removal of a particular antibody from a mixture on addition of the complementary antigen.

See: half-value layer, photoelectric effect, attenuation

[L. absorptio, fr. absorbeo, to swallow]