radial

Etymology

From Medieval Latin radiālis (“radial”), from Latin radius.

adj

1. Arranged like rays that radiate from, or converge to a common centre.
   A doorknob of whatever roundish shape is effectively a continuum of levers, with the axis of the latching mechanism—known as the spindle—being the fulcrum about which the turning takes place. Applying a force tangential to the knob is essentially equivalent to applying one perpendicular to a radial line defining the lever. 2012-03, Henry Petroski, “Opening Doors”, in American Scientist, volume 100, number 2, pages 112–3
2. Moving along a radius.
3. (anatomy) Of, or relating to the radius bone.
4. (entomology) Of, or relating to the radius (vein), and/or the wing areas next to it.
5. (botany) Developing uniformly on all sides.

noun

1. A radial tire / radial tyre.