Also 7 filterate. [ad. mod.L. filtrāt- ppl. stem of filtrāre to FILTER.]
1. trans. = FILTER v. 1.
1612. Woodall, The Surgeons Mate, Wks. (1653), 245. Calcine them, and after inbibe and filtrate them, etc.
1764. Harmer, Observ., XXVII. iv. 192. They filtrate it [the wine of Schiras] through a cloth, and then it is very clear.
1852. Th. Ross, trans. Humboldt’s Trav., II. xxiv. 439. Leaves of the plantain-tree rolled up in the shape of our filters, and used to filtrate the liquids, more or less loaded with fibrous matter.
c. 1865. Ld. Brougham, in Circ. Sc., I. Introd. Disc. 23. The process of vegetation filtrates or distils the liquid, so as to produce from the worst, the purest water.
fig. 1776. Johnson, in Boswell, Life, II. 408. He never clarified his notions, by filtrating them through other minds.
1885. H. N. Oxenham, Short Studies, 331. A Christianity filtrated of all its ‘sectarian’ dogmas is a Christianity so enlightened as to be able to dispense with Christ.
2. To cause to percolate; = FILTER v. 2.
1661. Boyle, Spring of Air, II. Index. A vessel by which Air may be filtrated thorough water.
1794. Sullivan, View Nat., I. 68. ‘Fires and elastic fluids,’ says De Luc, ‘formed by the fermentation which the waters, filtrated through these bodies, produced, made various openings in the bottom of the ocean, whence proceeded torrents of liquefied substances and lava, which gave rise to the volcanic mountains observable on the surface of our continents.’
3. intr. = FILTER v. 3.
1725. Bradley, Fam. Dict., s.v. Milk, A white Liquor which filtrates thro’ the Glands of Women’s Breasts.
1780. Schotte, in Phil. Trans., LXX. 480. Digging a pit into the sand more or less deep according to the height of the ground into which the water filtrates from all sides.
1834. T. Pringle, African Sketches, v. 210. Immense quantities of large rolled stones and gravel, through which the stream, when diminished by the summer heats, filtrates silently and unperceived.
fig. 1876. Tinsley’s Mag., XVIII. 43. The corruptions of the higher stratum of society had been slowly filtrating to the lower.
Hence Filtrated ppl. a., Filtrating vbl. sb. in quots. attrib.
1665. Hooke, Microgr., 128. These steamy parts of the the filterated Oyl issuing out at the sides of this ragg.
1730. Stuart, in Phil. Trans., XXXVI. 356. Such a small Quantity of filtrated Bile.
1772. Monro, ibid., LXII. 30. The remaining additional weight of the coffin, he believes, depended on some of the salts of the water being taken up by the spungy filtrating paper.
1811. J. Ashley, Patent, No. 3472. The water from the cistern passes through the perforated screw to the bottom space, and ascends through the filtrating medium, whereby it is purified and made clear.
1836. Macgillivray, trans. Humboldt’s Trav., xxiv. 350. The filtrated water losing itself in the crevices opened by ancient volcanic eruptions, and issuing at the bottom of the cordilleras.
