(zoology) a method of feeding occurring in some aquatic animals, such as planktonic invertebrates and whalebone whales, in which minute food particles are filtered from the surrounding water
- Filtering operation
filtering operation n. The surgical creation of a fistula between the anterior chamber of the eye and the subconjunctival space, as for glaucoma.
- Filter out
verb 1. (intransitive, adverb) to become known gradually; leak: rumours filtered out about the divorce
noun 1. porous paper used in filtering. noun 1. a porous paper used for filtering liquids
- Filter press
noun 1. an apparatus used for filtration consisting of a set of frames covered with filter cloth on both sides, between which the liquid to be filtered is pumped