noun, Plant Pathology.
a disease of pears, caused by a virus and characterized by deformed, pitted fruit.
noun 1. any of various meteorites composed mainly of rock-forming silicates, especially olivine, plagioclase, and pyroxene, and classified as achondrites or chondrites. stony meteorite noun 1. a meteorite composed mainly of silicates stony meteorite See under meteorite.
- Stony-iron meteorite
[stoh-nee-ahy-ern] /ˈstoʊ niˌaɪ ərn/ noun 1. a meteorite of roughly equal proportions of metallic iron and stony matter. stony-iron meteorite (stō’nē-ī’ərn) A relatively rare type of meteorite consisting of approximately equal amounts by weight of silicate minerals and an alloy of nickel and iron. See more at meteorite.
noun, Physics. 1. a device for storing charged particles fed from an accelerator, consisting of a set of magnets placed in a ring and adjusted to keep the particles circulating until they are used.
- Storage tube
noun 1. (electronics) an electron tube in which information is stored as charges for a predetermined time