an internal-combustion engine having the cylinders arranged in radial opposition, found mainly on older aircraft.
an internal-combustion engine having a number of cylinders arranged about a central crankcase
- Radial drilling machine
noun 1. a machine in which the drilling head is mounted to slide along a radial arm which can be rotated, raised, or lowered on a vertical mast to adjust the position of the drill above the workpiece Often shortened to radial
- Radial extensor muscle of wrist
radial extensor muscle of wrist n.
- Radial flexor muscle of wrist
radial flexor muscle of wrist n. A muscle with its origin from the humerus, with insertion to the second and third metacarpal bones, with nerve supply from the median nerve, and whose action flexes and abducts the wrist towards the radius.
- Radial growth phase
radial growth phase n. The early pattern of growth of cutaneous malignant melanoma in which tumor cells spread laterally into the epidermis.