The Collaborative International Dictionary
Filtrating
Filtrate \Fil"trate\, v. t. [imp. & p. p. Filtrated; p. pr. &
vb. n. Filtrating. ] [Cf. LL. filtrare. See Filter.]
To filter; to defecate; as liquid, by straining or
percolation.
--Arbuthnot.
Wiktionary
filtrating
vb. (present participle of filtrate English)