diverging
121angle — angle1 /ang geuhl/, n., v., angled, angling. n. 1. Geom. a. the space within two lines or three or more planes diverging from a common point, or within two planes diverging from a common line. b. the figure so formed. c. the amount of rotation… …
122electron tube — an electronic device that consists, typically, of a sealed glass bulb containing two or more electrodes: used to generate, amplify, and rectify electric oscillations and alternating currents. Also called electronic tube. Cf. gas tube, vacuum tube …
123optics — /op tiks/, n. (used with a sing. v.) the branch of physical science that deals with the properties and phenomena of both visible and invisible light and with vision. [1605 15; < ML optica < Gk optiká, n. use of neut. pl. of OPTIKÓS; see OPTIC,… …
124volcano — /vol kay noh/, n., pl. volcanoes, volcanos. 1. a vent in the earth s crust through which lava, steam, ashes, etc., are expelled, either continuously or at irregular intervals. 2. a mountain or hill, usually having a cuplike crater at the summit,… …
125art and architecture, Iranian — ▪ ancient art Introduction the art and architecture of ancient Iranian civilizations. Any reservation about attributing to Iran primary status among the countries contributing to the art of the ancient Middle East must be associated… …
126Lens — The transparent structure inside the eye that focuses light rays onto the retina (the nerve layer that lines the back of the eye, senses light and creates impulses that go through the optic nerve to the brain). The lens was named after the lentil …
127Meniscus — The word meniscus comes from the Greek and refers to a crescent shaped structure. Today a meniscus is something that is shaped like a crescent moon or a croissant pastry. A meniscus can be an anatomic feature. For example, the medial meniscus of… …
128crus — 1. SYN: leg. 2. Any anatomical structure resembling a leg; usually (in the plural) a pair of diverging bands or elongated masses. SEE ALSO: limb. [L.] ampullary crura of semicircular ducts SYN: ampullary membranous limbs of semicircular ducts,… …
