1. To a vital degree
   "this is vitally important"

See also: vital

• radiographer
• radiographic
• radiography
• radioimmunoassay
• radioisotope
• Radiolaria
• radiolarian
• radiolocate
• radiolocation
• radiologic
• radiologic technologist
• radiological
• radiologist
• radiology
• radiolucent
• radiolysis
• radiometer
• radiometry
• radiomicrometer
• radionuclide
• radiopacity
• radiopaque
• radiopaque dye
• radiopharmaceutical
• radiophone