Definition of concave

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Concave (a.) Hollow and curved or rounded; vaulted; -- said of the interior of a curved surface or line, as of the curve of the of the inner surface of an eggshell, in opposition to convex; as, a concave mirror; the concave arch of the sky..

Lern More About Concave

Dish :: Dish (n.) The state of being concave, or like a dish, or the degree of such concavity; as, the dish of a wheel..
Ichthyosaurus :: Ichthyosaurus (n.) An extinct genus of marine reptiles; -- so named from their short, biconcave vertebrae, resembling those of fishes. Several species, varying in length from ten to thirty feet, are known from the Liassic, Oolitic, and Cretaceous formations..
Triquetrous :: Triquetrous (a.) Three sided, the sides being plane or concave; having three salient angles or edges; trigonal..
Meniscus :: Meniscus (n.) A lens convex on one side and concave on the other.
Ophthalmoscope :: Ophthalmoscope (n.) An instrument for viewing the interior of the eye, particularly the retina. Light is thrown into the eye by a mirror (usually concave) and the interior is then examined with or without the aid of a lens..
Cup :: Cup (v. t.) To make concave or in the form of a cup; as, to cup the end of a screw..
Gorge :: Gorge (n.) A concave molding; a cavetto.
Concavo-concave :: Concavo-concave (a.) Concave or hollow on both sides; double concave.
Belemnite :: Belemnite (n.) A conical calcareous fossil, tapering to a point at the lower extremity, with a conical cavity at the other end, where it is ordinarily broken; but when perfect it contains a small chambered cone, called the phragmocone, prolonged, on one side, into a delicate concave blade; the thunderstone. It is the internal shell of a cephalopod related to the sepia, and belonging to an extinct family. The belemnites are found in rocks of the Jurassic and Cretaceous ages..
Depressed :: Depressed (a.) Concave on the upper side; -- said of a leaf whose disk is lower than the border.
Tocororo :: Tocororo (n.) A cuban trogon (Priotelus temnurus) having a serrated bill and a tail concave at the end.
Concave :: Concave (a.) Hollow and curved or rounded; vaulted; -- said of the interior of a curved surface or line, as of the curve of the of the inner surface of an eggshell, in opposition to convex; as, a concave mirror; the concave arch of the sky..
Concavous :: Concavous (a.) Concave.
Concavo-convex :: Concavo-convex (a.) Specifically, having such a combination of concave and convex sides as makes the focal axis the shortest line between them. See Illust. under Lens..
Scotia :: Scotia (n.) A concave molding used especially in classical architecture.
Concaved :: Concaved (imp. & p. p.) of Concav.
Concave :: Concave (n.) A hollow; an arched vault; a cavity; a recess.
Vaulty :: Vaulty (a.) Arched; concave.
Saddleback :: Saddleback (n.) Anything saddle-backed; esp., a hill or ridge having a concave outline at the top..
Myopia :: Myopia (n.) Nearsightedness; shortsightedness; a condition of the eye in which the rays from distant object are brought to a focus before they reach the retina, and hence form an indistinct image; while the rays from very near objects are normally converged so as to produce a distinct image. It is corrected by the use of a concave lens..
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