1. The univalent anion O2-
   "much of the O2 supporting cellular respiration is reduced to the superoxide anion O2-"
   - superoxide

Type of: anion

• unshod
• unshoed
• unshorn
• unshrinkable
• unshrinking
• unshuttered
• unsighted
• unsightliness
• unsightly
• unsigned
• unsilenced
• unsimilarity
• unsinkable
• unsized
• unskilful
• unskilfulness
• unskilled
• unskilled person
• unskillful
• unskillfulness
• unslaked lime
• unsleeping
• unsling
• unsloped
• unsmiling