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A quadrilateral, tailless kite, with convex surfaces exposed to the wind. This kite was extensively used by Eddy in his famous meteorological experiments. It is now generally superseded by the box kite.

A slight convex swelling of the shaft of a column.

A curve traced by a point in the circumference of a circle which rolls on the convex side of a fixed circle.

der Collimate. -- Negative, or Huyghenian, eyepiece, an eyepiece consisting of two plano-convex lenses with their curved surfaces turned toward the object glass, and separated from each other by about half the sum of their focal distances, the image viewed by the eye being formed between the two lenses. it was devised…

plane for making a rabbet. Fillister screw had, a short cylindrical screw head, having a convex top.

A two-handled, convex, blunt-edged knife, for scraping hides; a fleshing knife.

ur gearing, gearing in which the teeth or cogs are ranged round either the concave or the convex surface (properly the latter) of a cylindrical wheel; -- for transmitting motion between parallel shafts, etc.

Swelling by a regular curve or surface; protuberant; convex; as, the moon is gibbous between the half-moon and the full moon. The bones will rise, and make a gibbous member. Wiseman.

, paired fins without an axis, fulcra on the fins, and a bony skeleton, with the vertebræ convex in front and concave behind, forming a ball and socket joint. See Ganoidel.

The median, convex lobe of the head of a trilobite. See Trilobite.

ets light. Dryden. Hull down, said of a ship so distant that her hull is concealed by the convexity of the sea.

Exhibiting a downward convexity caused by unequal growth. Cf. Epinastic.

Downward convexity, or convexity of the inferior surface.

incarcerate. Those tender babes Whom envy hath immured within your walls. Shak. This huge convex of fire, Outrageous to devour, immures us round. Milton.

Bent out of a perpendicular position, or into a curve with the convex side uppermost. Inclined plane. (Mech.) (a) A plane that makes an oblique angle with the plane of the horizon; a sloping plane. When used to produce pressure, or as a means of moving bodies, it is one of the mechanical powers, so called. (b) (Railroa…

Having a border or outline composed of semicircles with the convexity outward; -- the opposite of engrailed.

A convex portion of a vessel's figure where a sudden change of shape occurs, as in a canal boat, where a nearly vertical side joins a nearly flat bottom.

Resembling a lentil in size or form; having the form of a double-convex lens.

f watch crystal which is more than ordinarily flattened in the center; also, a species of convexoconcave lens for spectacles.

To cover, as a road, or street, with small, broken stones, so as to form a smooth, hard, convex surface.