a ball of clear crystal, glass, or the like, used in crystal gazing.
a method or means of predicting the future.
the glass globe used in crystal gazing
A means of predicting the future, as in So what does your crystal ball say about the coming election? The term is a figurative use of the crystal or glass ball used by fortune-tellers. [ c. 1900 ]
- Crystal class
noun 1. (crystallog) any of 32 possible types of crystals, classified according to their rotational symmetry about axes through a point Also called point group
[kris-tl-kleer] /ˈkrɪs tlˈklɪər/ adjective 1. absolutely clear; transparent; lucid.
- Crystal counter
noun 1. an instrument for detecting and measuring the intensity of high-energy radiation, in which particles collide with a crystal and momentarily increase its conductivity
noun, Crystallography. 1. (def 3). [noun dee-fekt, dih-fekt; verb dih-fekt] /noun ˈdi fɛkt, dɪˈfɛkt; verb dɪˈfɛkt/ noun 1. a shortcoming, fault, or imperfection: a defect in an argument; a defect in a machine. 2. lack or want, especially of something essential to perfection or completeness; deficiency: a defect in hearing. 3. Also called crystal defect, […]