The noun FILTRATION has 2 senses: 1. the process whereby fluids pass through a filter or a filtering medium. 2. the act of changing a fluid by passing it through a filter. Familiarity information: FILTRATION used as a noun is rare.
A sentence averages eleven words; an A4 / letter size sheet averages 32 to 35 sentences. A normal size sheet of paper with a standard layout, based on 80% - 90% coverage contains about 350 to 400 words.
As you can see, the ideal length of word count vs. average organic traffic is sitting pretty at 2,250-2,500 words. Mind you, this is the big picture currently, so likely the best blog length for 2016 will continue to go up beyond my or your ability to satiate!