| bulge | 1. The bilge or protuberant part of a cask. 2. A swelling, protuberant part; a bending outward, especially. When caused by pressure; as, a bulge in a wall. 3. The bilge of a vessel. See Bilge. Bulge ways. See Bilge ways. Origin: OE. Bulge a swelling; cf. AS. Belgan to swell, OSw. Bulgja, Icel. Bolginn swollen, OHG. Belgan to swell, G. Bulge leathern sack, Skr. Bh to be large, strong; the root meaning to swell. Cf. Bilge, Belly, Billow, Bouge. 1. To swell or jut out; to bend outward, as a wall when it yields to pressure; to be protuberant; as, the wall bulges. 2. To bilge, as a ship; to founder. "And scattered navies bulge on distant shores." (Broome) Origin: Bulged; Bulging. Source: Websters Dictionary (01 Mar 1998) |
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| convex | Applied to a surface that is evenly curved outward, the segment of a sphere. Origin: L. Convexus, vaulted, arched, convex, fr. Con-veho, to bring together (05 Mar 2000) |
| convex lens | A converging lens. Synonym: plus lens. (05 Mar 2000) |
| convex mirror | A spherical reflecting surface that constitutes a segment of the exterior of a sphere. (05 Mar 2000) |
| high convex | The segment of a sphere of short radius. (05 Mar 2000) |
| double convex lens | A lens with both surfaces convex. Synonym: convexoconvex lens, double convex lens. (05 Mar 2000) |
| low convex | The segment of a sphere of long radius. (05 Mar 2000) |