Crystal-detector
noun, Radio.
1.
a device for rectifying a modulated radio-frequency signal, consisting of a crystal of germanium, silicon, galena, or the like with a cat whisker contact, permitting a high-frequency current to pass freely in one direction only: one of the two principal components of a crystal set.
noun
1.
(electronics) a demodulator, used esp in microwave circuits and in early radio receivers, consisting of a thin metal wire in point contact with a semiconductor crystal
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noun 1. (crystallog) a symmetrical set of planes in space, associated with a crystal, having the same symmetry as the crystal class Compare crystal habit
- Crystal-gazing
noun 1. the practice of staring into a crystal ball, as by a fortuneteller, to see distant happenings, future events, etc. 2. speculation about the future. noun 1. the act of staring into a crystal globe (crystal ball) supposedly in order to arouse visual perceptions of the future, etc 2. the act of trying to […]
- Crystal habit
noun 1. (crystallog) the external shape of a crystal Compare crystal form
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noun [second sense because such persons prize crystals for various putative powers]
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noun 1. (in alternative therapy) the use of the supposed power of crystals to affect the human energy field noun the use of crystals in alternative medicine to attempt healing; also called crystal therapy See crystal therapy