Spoke more than once?

• They're half the diameter
• Two may make a diameter
• Parts of circles
• The two sides of Pac-Man's mouth, say
• Half diameters
• Hub-to-rim lines
• Circle spokes

WordNet Word definitions in WordNet
See radius

Longman Dictionary of Contemporary English Word definitions in Longman Dictionary of Contemporary English
EXAMPLES FROM CORPUS ▪ Ferry takes vo as including not only the Van der Waals' radii but also the volume associated with vibrational motion. ▪ High-speed ejected debris destroys everything within five or six crater radii of the point of impact. ▪ Imperfect, ...