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Medical Term:


Pronunciation: in′fil-trāt, in-fil′trāt


  1. To perform or undergo infiltration.
  2. A cellular infiltration (1) in the lung as inferred from appearance of a localized, ill-defined opacity on a chest radiograph; commonly used to describe a shadow on a radiograph.

Synonym(s): infiltration2

[L. in + Mediev. L. filtro, pp. -atus, to strain through felt, fr. filtrum, felt]