a train of gears or pulleys in which one or more of the axes revolve about a central axis.
a cluster of gears consisting of a central gearwheel with external teeth (the sun), a coaxial gearwheel of greater diameter with internal teeth (the annulus), and one or more planetary gears engaging with both of them to provide a large gear ratio in a compact space
[ep-uh-sahy-kloid] /ˌɛp əˈsaɪ klɔɪd/ noun, Geometry. 1. a curve generated by the motion of a point on the circumference of a circle that rolls externally, without slipping, on a fixed circle. Equation: x = (a + b) cos(θ) − b cos[(a + b)θ/ b ] and y = (a + b) sin(θ) − b sin[(a […]
noun 1. one of the gears of an epicyclic train.
- Epicycloidal wheel
noun 1. one of the planetary gears of an epicyclic train
epicystitis ep·i·cys·ti·tis (ěp’ĭ-sĭ-stī’tĭs) n. Inflammation of the tissue surrounding the bladder.