1. Capable of being thrust forward, as the tongue
   - protrusile

See also: extensible, extensile, protrude

• Radclyffe Hall
• raddle
• raddled
• Radhakrishnan
• radial
• radial artery
• radial asymmetry
• radial engine
• radial keratotomy
• radial nerve
• radial pulse
• radial symmetry
• radial tire
• radial tyre
• radial vein
• radial velocity
• radial-ply
• radial-ply tire
• radial-ply tyre
• radially
• radially symmetrical
• radian
• radiance
• radiancy
• radiant