1. Having characteristics of both an acid and a base and capable of reacting as either
   - amphoteric

Encyclopedia: Amphiprotic

• rental income
• rente
• renter
• rentier
• renting
• renumber
• renunciant
• renunciation
• renunciative
• renvoi
• reoccupy
• reoccur
• reoccurence
• reopen
• reorder
• reordering
• reorganisation
• reorganise
• reorganised
• reorganization
• reorganize
• reorganized
• reorient
• reorientate
• reorientation