1. Not claimed or called for by an owner or assignee
   "unclaimed luggage"

See also: unwanted

• natural language processing
• natural language processing application
• natural language processor
• natural law
• natural logarithm
• natural number
• natural object
• natural order
• natural phenomenon
• natural philosophy
• natural process
• natural resin
• natural resource
• natural resources
• natural rubber
• natural science
• natural scientist
• natural selection
• natural shape
• natural spring
• natural state
• natural theology
• natural virtue
• naturalisation
• naturalise