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of the base. -- Axis of a pyramid (Geom.), a straight line drawn from the vertex to the center of the base. -- Earth pyramid. (Geol.) See Earth pillars, under Earth. -- Right pyramid (Geom.) a pyramid whose axis is perpendicular to the base.

r of the circumference of a circle, an arc of 90º, or one subtending a right angle at the center.

(Houstonia cærulea), with pretty four-lobed corollas which are pale blue with a yellowish center; -- also called bluets, and little innocents.

Dipping toward all points of the compass round a center, as beds of lava round a crater.

.) Same as Quadrate. -- Quarter back (Football), the player who has position next behind center rush, and receives the ball on the snap back. -- Quarter badge (Naut.), an ornament on the side of a vessel near, the stern. Mar. Dict. -- Quarter bill (Naut.), a list specifying the different stations to be taken by the…

Emitting or proceeding as from a center; [U.S.] rays; radiating; radiate.

Having rays or parts diverging from a center; radiated; as, a radiate crystal.

ranged like, rays or radii; having parts or markings diverging, like radii, from a common center or axis; as, a radiated structure; a radiated group of crystals.

In a radiate manner; with radiation or divergence from a center.

Hence: Of or pertaining to the root or origin; reaching to the center, to the foundation to the ultimate sources to the principles, or the like: original; fundamental; thorough-going; unsparing; extreme; as, radical evils; radical reform; a radical party. The most determined exertions of that authority, against them, o…

A right line drawn or extending from the center of a circle to the periphery; the semidiameter of a circle or sphere.

An ideal straight line joining the center of an attracting body with that of a body describing an orbit around it, as a line joining the sun and a planet or comet, or a planet and its satellite.

One of a number of lines or parts diverging from a common point or center, like the radii of a circle; as, a star of six rays.

rom the instituted shore. Dryden. All bodies moved circularly endeavor to recede from the center. Bentley.

ecumbent. Reclining dial, a dial whose plane is inclined to the vertical line through its center. Davies & Peck (Math. Dict.).

A small Australian singing bird (Phyrrholæmus brunneus). The upper parts are brown, the center of the throat red.

ard or spar. Totten. To reef the paddles, to move the floats of a paddle wheel toward its center so that they will not dip so deeply.

y in consequence of an impulse or impression transmitted along afferent nerves to a nerve center, from which it is reflected to an efferent nerve, and so calls into action certain muscles, organs, or cells. -- Reflex nerve (Physiol.), an excito-motory nerve. See Exito- motory.

To throw back, or cause to keep back (as the center, a wing, or a flank), out of the regular aligment when troops aras, to refuse the right wing while the left wing attacks.

The open hearth, upon which fires were lighted, immediately under the louver, in the center of ancient halls. [Also spelt reredosse.] Fairholt.