Geometry measures

• Two may make a diameter
• Lines from the centre to the circumference of a circle
• Spokes, essentially
• Spokes of a circle
• They're found in circles
• Parts of forearms
• Bicycle spokes, essentially
• Pizza cut edges, e.g
• Wheel spokes, e.g

The Collaborative International Dictionary Word definitions in The Collaborative International Dictionary
Radius \Ra"di*us\ (r[=a]"d[i^]*[u^]s), n.; pl. L. Radii (r[=a]"d[i^]*[imac]); E. Radiuses (r[=a]"d[i^]*[u^]s*[e^]z). [L., a staff, rod, spoke of a wheel, radius, ray. See Ray a divergent line.] (Geom.) A right line drawn or extending from the center of ...