filter out

filter out (third-person singular simple present filters out, present participle filtering out, simple past and past participle filtered out)

1. (transitive) To selectively remove part of something.

   The sieve will filter out large rocks and grains of sand.

   The brain automatically filters out useless information.

2. (intransitive) To come out gradually (e.g. news).
   • 1941 April, “Notes and News: Railwaymen and Snow”, in Railway Magazine, page 177:

     The story of last winter's unprecedented snowstorms in Great Britain is slowly filtering out.