an adjustable resistor so constructed that its resistance may be changed without opening the circuit in which it is connected, thereby controlling the current in the circuit.
a variable resistance, usually consisting of a coil of wire with a terminal at one end and a sliding contact that moves along the coil to tap off the current
See under resistor.
rheostosis rhe·os·to·sis (rē’ŏs-tō’sĭs) n. A hypertrophying and condensing osteitis which tends to run in longitudinal streaks or columns, like wax drippings on a candle, and involves a number of the long bones.
noun, Biology. 1. oriented movement of an organism in response to a current of fluid, especially water. noun 1. movement of an organism towards or away from a current of water rheotaxis rhe·o·tax·is (rē’ə-tāk’sĭs) n. Movement of an organism in response to a current of fluid or air.
noun, Physics. 1. (formerly) betatron.
noun 1. the effect of a current of water upon the direction of plant growth. noun 1. growth of a plant or sessile animal in the direction of a current of water rheotropism rhe·ot·ro·pism (rē-ŏt’rə-pĭz’əm) n. Growth or movement of a part of an organism in response to the motion of a current.