Torricellian tube, a glass tube thirty or more inches in length, open at the lower end and hermetically sealed at the upper, such as is used in the barometer.Torricellian vacuum(Physics), a vacuum produced by filling with a fluid, as mercury, a tube hermetically closed at one end, and, after immersing the other end in a vessel of the same fluid, allowing the inclosed fluid to descend till it is counterbalanced by the pressure of the atmosphere, as in the barometer. Hutton.

Torrid
(Tor"rid) a. [L. torridus, fr. torrere to parch, to burn, akin to E. Thist: cf. F. torride. See Thirst.]

1. Parched; dried with heat; as, a torrid plain or desert. "Barca or Cyrene's torrid soil." Milton.

2. Violenty hot; drying or scorching with heat; burning; parching. "Torrid heat." Milton.

Torrid zone(Geog.), that space or board belt of the earth, included between the tropics, over which the sun is vertical at some period of every year, and the heat is always great.

Torridity
(Tor*rid"i*ty) n. Torridness. [R.]

2. (Her.) Twisted; bent; — said of a dolphin haurient, which forms a figure like the letter S.

Torques
(||Tor"ques) n. [L., a necklace. See Torque, 1.] (Zoöl.) A cervical ring of hair or feathers, distinguished by its color or structure; a collar.

Torrefaction
(Tor`re*fac"tion) n. [L. torrefacere,torrefactum, to torrefy: cf. F. torréfaction. See Torrefy.] The act or process of torrefying, or the state of being torrefied. Bp. Hall.

Torrefy
(Tor"re*fy) v. t. [imp. & p. p. Torrefied ; p. pr. & vb. n. Torrefying.] [L. torrere to parch + - fy: cf. F. torréfier, L. torrefacere.] [Written also torrify.]

1. To dry by a fire. Sir T. Browne.

2. (Metal.) To subject to scorching heat, so as to drive off volatile ingredients; to roast, as ores.

3. (Pharm.) To dry or parch, as drugs, on a metallic plate till they are friable, or are reduced to the state desired.

Torrent
(Tor"rent) n. [F., fr. L. torrens, -entis, fr. torrens burning, roaring, boiling, p. pr. of torrere to dry by heat, to burn. See Torrid.]

1. A violent stream, as of water, lava, or the like; a stream suddenly raised and running rapidly, as down a precipice.

The roaring torrent is deep and wide.
Longfellow.

2. Fig.: A violent or rapid flow; a strong current; a flood; as, a torrent of vices; a torrent of eloquence.

At length, Erasmus, that great injured name, . . .
Stemmed the wild torrent of a barbarous age.
Pope.

Torrent
(Tor"rent), a. [See Torrent, n.] Rolling or rushing in a rapid stream. "Waves of torrent fire." Milton.

Torrential
(Tor*ren"tial Tor*ren"tine) a. Of or pertaining to a torrent; having the character of a torrent; caused by a torrent . [R.]

Torricellian
(Tor`ri*cel"li*an) a. Of or pertaining to Torricelli, an Italian philosopher and mathematician, who, in 1643, discovered that the rise of a liquid in a tube, as in the barometer, is due to atmospheric pressure. See Barometer.


  By PanEris using Melati.

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