Part 144

Dryden.

Fil`o*plu*ma"ceous (?), a. (Zoˆl.) Having the structure of a filoplume.

Fil"o*plume (?), n. [L. filum a thread &?; pluma a soft feather.] (Zoˆl.) A hairlike feather; a father with a slender scape and without a web in most or all of its length.

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Fi"lose` (?), a. [L. filum a thread.] Terminating in a threadlike process.

Fil"ter (?), n. [F. filtre, the same word as feutre felt, LL. filtrum, feltrum, felt, fulled wool, this being used for straining liquors. See Feuter.] Any porous substance, as cloth, paper, sand, or charcoal, through which water or other liquid may passed to cleanse it from the solid or impure matter held in suspension; a chamber or device containing such substance; a strainer; also, a similar device for purifying air.

Filter bed, a pond, the bottom of which is a filter composed of sand gravel. -- Filter gallery, an underground gallery or tunnel, alongside of a stream, to collect the water that filters through the intervening sand and gravel; -- called also infiltration gallery.

Fil"ter, v. t. [imp. & p. p. Filtered (?); p. pr. & vb. n. Filtering] [Cf. F. filter. See Filter, n., and cf. Filtrate.] To purify or defecate, as water or other liquid, by causing it to pass through a filter.

Filtering paper, or Filter paper, a porous unsized paper, for filtering.

Fil"ter, v. i. To pass through a filter; to percolate.

Fil"ter, n. Same as Philter.

Filth (?), n. [OE. filthe, fule, AS. f&?;l, fr. fl foul; akin to OHG. flida. See Foul, and cf. File.] 1. Foul matter; anything that soils or defiles; dirt; nastiness.

2. Anything that sullies or defiles the moral character; corruption; pollution.

To purify the soul from the dross and filth of sensual delights.

Tillotson.

Filth disease (Med.), a disease supposed to be due to pollution of the soil or water.

Filth"i*ly (?), adv. In a filthy manner; foully.

Filth"i*ness, n. 1. The state of being filthy.

Let us cleanse ourselves from all filthiness of the flesh and spirit.

2 Cor. vii. 1.

2. That which is filthy, or makes filthy; foulness; nastiness; corruption; pollution; impurity.

Carry forth the filthiness out of the holy place.

2 Chron. xxix. 5.

Filth"y (?), a. [Compar. Filthier (?); superl. Filthiest.] Defiled with filth, whether material or moral; nasty; dirty; polluted; foul; impure; obscene. "In the filthy-mantled pool." Shak.

He which is filthy let him be filthy still.

Rev. xxii. 11.

Syn. -- Nasty; foul; dirty; squalid; unclean; sluttish; gross; vulgar; licentious. See Nasty.

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.