1. Based in theory rather than experiment
   "theory-based arguments and positions"

See also: theoretic, theoretical

• adaptor
• Adar
• Adar Sheni
• adaxial
• adaxially
• add
• add on
• add to
• add together
• add up
• add-in
• addable
• addax
• Addax nasomaculatus
• addend
• addendum
• adder
• adder's fern
• adder's tongue
• adder's tongue fern
• addible
• addict
• addicted
• addiction
• addictive