1. The ordinal number of four hundred in counting order
   - four-hundredth

See also: ordinal

• reinstate
• reinstatement
• reinsurance
• reinsure
• reintegrate
• reintegration
• reinterpret
• reinterpretation
• reintroduce
• reintroduction
• reinvent
• reinvest
• reinvestment
• reinvigorate
• reinvigorated
• reissue
• REIT
• Reiter
• Reiter's disease
• Reiter's syndrome
• reiterate
• reiteration
• reiterative
• Reithrodontomys
• reject