9-Letter Words Containing: Y,R,I,O

• surgical procedure in which spinal nerve roots are cut; done (anterior roots) to relieve intractable pain or (posterior roots) to stop severe muscle spasms

• A fragment of RNA that can act as an enzyme.

• a compound of an oxide with water

• a chemical compound containing the hydroxyl group

• highly flammable nitrocellulose used in making collodion and plastics and lacquers

• any of a group of RNA viruses including those that cause influenza and mumps