Webster's Revised Unabridged Dictionary · 1913

Filtrate

Filtrate , transitive verb

[Compare Late Latin filtrare. See Filter.]

To filter; to defecate; as liquid, by straining or percolation. — Arbuthnot

Filtrate , noun

That which has been filtered; the liquid which has passed through the filter in the process of filtration. Contrasted with retentate, the material remaining on the filter.