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ssively prominent; bulging beyond the surrounding or adjacent surface; swelling; as, a protuberant joint; a protuberant eye. -- Pro*tu"ber*ant*ly, adv.

To swell, or be prominent, beyond the adjacent surface; to bulge out. S. Sharp.

The act of swelling beyond the surrounding surface. Cooke (1615).

Protuberant. [R.]

The production of young tubers, as potatoes, from the old while still growing.

A tube fixed below or near the water line through which a torpedo is fired, usually by a small charge of gunpowder. On torpedo vessels the tubes are on deck and usually in broadside, on larger vessels usually submerged in broadside and fitted with a movable shield which is pushed out from the vessel's side to protect t…

Having or designating teeth with three cusps or tubercles; tricuspid.

er molars. This primitive triangle is called the trigon or trigonid and this stage the tritubercular or trigonodont. The trigon being a cutting apparatus, an extension of the posterior part of the crown was developed in lower molars for crushing, and a smaller corresponding part appeared in upper molars. Another large…

An imaginary tube within a rotating fluid, formed by drawing the vortex lines through all points of a closed curve.

One of a system of tubular excretory organs having external openings, found in many invertebrates. They are believed to be analogous in function to the kidneys of vertebrates. See Illust. under Trematodea, and Sporocyst.

A vacuum tube suitable for producing Röntgen rays.

Having a protuberant belly; pot-bellied. Gorgonius sits, abdominous and wan, Like a fat squab upon a Chinese fan. Cowper.

telegraph, a telegraph making audible signals; a telephone. -- Acoustic vessels, brazen tubes or vessels, shaped like a bell, used in ancient theaters to propel the voices of the actors, so as to render them audible to a great distance.

A connecting tube; an adopter.

ting chiefly of a closed vessel (as a globe or cylinder) with one or more projecting bent tubes, through which steam is made to pass from the vessel, causing it to revolve. [Written also eolipile.]

Conveying or containing air; air-bearing; as, the windpipe is an aëriferous tube.

f air in various parts of the system; as, a cell or minute cavity in the walls of the air tubes of the lungs; the air sac of birds; a dilatation of the air vessels in insects.

A vessel, cell, duct, or tube containing or conducting air; as the air vessels of insects, birds, plants, etc.; the air vessel of a pump, engine, etc. For the latter, see Air chamber. The air vessels of insects are called tracheæ, of plants spiral vessels.

A tube through which is water is discharged; an efflux tube; as, the ajutage of a fountain.

minoid substance which occurs in minute grains ("protein granules") in maturing seeds and tubers; -- supposed to be a modification of protoplasm.