a record-player pick-up in which the current is generated by the deformation of a piezoelectric crystal caused by the movements of the stylus
noun 1. any of a line of narrow, corrugated pleats pressed into a fabric, especially one that is lightweight.
noun 1. an early, tubeless radio receiver using a crystal detector. noun 1. an early form of radio receiver having a crystal detector to demodulate the radio signals but no amplifier, therefore requiring earphones
noun, Crystallography. 1. any of the six main classifications of crystals and of crystal lattices according to their symmetry: isometric, hexagonal, tetragonal, orthorhombic, monoclinic, and triclinic. noun 1. (crystallog) any of six, or sometimes seven, classifications of crystals depending on their symmetry. The classes are cubic, tetragonal, hexagonal, orthorhombic, monoclinic, and triclinic. Sometimes an additional […]
noun 1. . noun 1. a bog shrub, Ledum palustre, of the heath family, found from the North Temperate Zone to the Arctic Circle, having leaves that are rust-colored and hairy beneath with rolled margins, and dense clusters of white flowers.