filtering

Etymology

verb

1. present participle and gerund of filter

noun

1. The process of passing something through a filter.
2. Something that passes through a filter.
   the filterings from the subsoils 1819, Abraham Rees, The Cyclopædia
   Waking up in Langogne in a dim dawn, I felt in a strange sort of way more at home than I'd been for a long time in my own sadly altered version of home, even a year on from her death – especially in the first filterings of daylight […] 2006, Christopher Rush, To Travel Hopefully, page 146