1. Forming one or more whorls (especially a whorl of leaves around a stem)
   - verticillate, whorled

See also: cyclic

• radioactivity unit
• radiobiologist
• radiobiology
• radiocarbon
• radiocarbon dating
• radiocarpal joint
• radiochemist
• radiochemistry
• radiochlorine
• radiocommunication
• radioelement
• radiogram
• radiograph
• radiographer
• radiographic
• radiography
• radioimmunoassay
• radioisotope
• Radiolaria
• radiolarian
• radiolocate
• radiolocation
• radiologic
• radiologic technologist
• radiological