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Having the front of the head, or the skull, nearly perpendicular, not retreating backwards above the jaws; -- opposed to Ant: prognathous. See Gnathic index, under Gnathic.

Perpendicularly; at right angles; as, a curve cuts a set of curves orthogonally.

ection, that projection which is made by drawing lines, from every point to be projected, perpendicular to the plane of projection. Such a projection of the sphere represents its circles as seen in perspective by an eye supposed to be placed at an infinite distance, the plane of projection passing through the center of…

eam engine whose cylinder oscillates on trunnions instead of being permanently fixed in a perpendicular or other direction. Weale.

Above the perpendicular height or length of, with an idea of measurement; as, the water, or the depth of water, was over his head, over his shoes.

One of the greater ordinaries, being a broad perpendicular stripe in an escutcheon, equally distant from the two edges, and occupying one third of it.

A perpendicular band upon an escutcheon, one half the breadth of the pale.

In the manner of a pale or pales; by perpendicular lines or divisions; as, to divide an escutcheon palewise.

Divided into four or more equal parts by perpendicular lines, and of two different tinctures disposed alternately.

To raise to a position perpendicular, or more nearly so; as, to peak oars, to hold them upright; to peak a gaff or yard, to set it nearer the perpendicular.

s. Pedal curve or surface (Geom.), the curve or surface which is the locus of the feet of perpendiculars let fall from a fixed point upon the straight lines tangent to a given curve, or upon the planes tangent to a given surface. -- Pedal note (Mus.), the note which is held or sustained through an organ point. See Org…

Having the axis of the seed perpendicular to the axis of the pericarp to which it is attached.

Perpendicular; vertical; conforming the direction of a line attached to a plumb; as, the wall is plumb.

Directly; suddenly; perpendicularly. "Fall plump." Beau. & Fl.

rt of the circumference of a great circle; or the point in which a diameter of the sphere perpendicular to the plane of such circle meets the surface. Such a point is called the pole of that circle; as, the pole of the horizon; the pole of the ecliptic; the pole of a given meridian.

A headlong steep; a very steep, perpendicular, or overhanging place; an abrupt declivity; a cliff. Where wealth like fruit on precipices grew. Dryden.

reast of another. Pesent arms (Mil.), the command in response to which the gun is carried perpendicularly in front of the center of the body, and held there with the left hand grasping it at the lower band, and the right hand grasping the small of the stock, in token of respect, as in saluting a superior officer; also,…

each of which is at right angles to the other two, and bisects all chords of the quadric perpendicular to the plane, as in an ellipsoid. -- Principal point (Persp.), the projection of the point of sight upon the plane of projection. -- Principal ray (Persp.), the line drawn through the point of sight perpendicular t…

Anything which is required to be done; as, in geometry, to bisect a line, to draw a perpendicular; or, in algebra, to find an unknown quantity.

smuted into gold. -- Projection of a point on a plane (Descriptive Geom.), the foot of a perpendicular to the plane drawn through the point. -- Projection of a straight line of a plane, the straight line of the plane connecting the feet of the perpendiculars let fall from the extremities of the given line.…