Business / Machine Shop / Radial: In a direction directly outward from the center of a circle or sphere or from the axis of a cylinder. The spokes of a wheel, for example, are radial.

Radial Drainage

Science / Geology / Radial Drainage: A system of streams running in a radial pattern away from the center of a circular elevation, such as a volcano or dome. MORE

Radial Engine

Technology / Aviation / Radial Engine: A reciprocating aircraft engine in which all of the cylinders are arranged radially, or spoke-like, around a small crankcase. Also referred to as round engines. MORE

Radially Symmetrical

Science / Biology / Radially Symmetrical: In animals, refers to organisms with their body parts arranged around a central axis. Such animals tend to be circular or cylindrical in shape. MORE

Radial Velocity

Science / Weather / Radial Velocity: A type of velocity that expresses motion toward or away from a given location. In Doppler radar, it is the component of motion that is parallel to the radar beam. MORE

Radial Mounted Calipers

Technology / Motorcycle / Radial Mounted Calipers: A transfer of technology from road racing machines to street bikes of today. The brake calipers attach to the front fork with bolts aligned with the caliper centerline (as opposed to bolts through the MORE


Technology / Radar / Ramark: A radar beacon which continuously transmits a signal appearing as a radial line on the ppi, indicating the direction of the beacon from the ship. For identification purposes, the radial line may be fo MORE