Eustachian catheter. See under Eustachian.Prostatic catheter, one adapted for passing an enlarged prostate.

(Cath"e*ter*ism Cath`e*ter*i*za"tion) n. (Med.) The operation of introducing a catheter.

(Cath"e*ter*ize) v. t. [imp. & p. p. Catheterized ; p. pr. & vb. n. Catheterizing.] (Med.) To operate on with a catheter. Dunglison.

(Cath`e*tom"e*ter) n. [From Gr. vertical height + -meter.] An instrument for the accurate measurement of small differences of height; esp. of the differences in the height of the upper surfaces of two columns of mercury or other fluid, or of the same column at different times. It consists of a telescopic leveling apparatus (d), which slides up or down a perpendicular metallic standard very finely graduated The telescope is raised or depressed in order to sight the objects or surfaces, and the differences in vertical height are thus shown on the graduated standard. [Written also kathetometer.]

(||Cath"e*tus) n.; pl. catheti [L., fr. Gr. a perpendicular line, fr. let down, fr. . See Catheter.] (Geom.) One line or radius falling perpendicularly on another; as, the catheti of a right-angled triangle, that is, the two sides that include the right angle. Barlow.

(Cath"ode) n. [Gr. descent; down + way.] (Physics) The part of a voltaic battery by which the electric current leaves substances through which it passes, or the surface at which the electric current passes out of the electrolyte; the negative pole; — opposed to anode. Faraday.

Cathode ray(Phys.), a kind of ray generated at the cathode in a vacuum tube, by the electrical discharge.

(Ca*the"dral), a. [LL. cathedralis: cf. F. cathédral.]

1. Pertaining to the head church of a diocese; as, a cathedral church; cathedral service.

2. Emanating from the chair of office, as of a pope or bishop; official; authoritative.

Now, what solemnity can be more required for the pope to make a cathedral determination of an article!
Jer. Taylor.

3. Resembling the aisles of a cathedral; as, cathedral walks. Pope.

(Cath`e*dral"ic) a. Cathedral. [R.]

(Cath`e*dra"ted) a. [From Cathedra.] Relating to the chair or office of a teacher. [Obs.]

(Cath`e*ret"ic) n. [Gr. fr. to bring down or raze; down + to take.] (Med.) A mild kind caustic used to reduce warts and other excrescences. Dunglison.

Catherine wheel
(Cath"er*ine wheel`) [So called from St. Catherine of Alexandria, who is represented with a wheel, in allusion to her martyrdom.]

1. (Geoth.Arth.) Same as Rose window and Wheel window. Called also Catherine-wheel window.

2. (Pyrotechny) A revolving piece of fireworks resembling in form the window of the same name. [Written also Catharine wheel.]

(Cath"e*ter) n. [L., fr. Gr. a thing let down or put in, catheter, fr. to send down, to let down; + to send.] (Med.) The name of various instruments for passing along mucous canals, esp. applied to a tubular instrument to be introduced into the bladder through the urethra to draw off the urine.

  By PanEris using Melati.

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