1. Capable of being tested (verified or falsified) by experiment or observation
   - verifiable, falsifiable

See also: empiric, empirical

• Delphinapterus leucas
• Delphinidae
• delphinium
• Delphinium ajacis
• Delphinus
• Delphinus delphis
• delta
• delta hepatitis
• delta iron
• delta ray
• delta rhythm
• delta wave
• delta wing
• deltaic
• Deltasone
• deltiology
• deltoid
• deltoid eminence
• deltoid leaf
• deltoid muscle
• deltoid tuberosity
• delude
• deluge
• delusion
• delusional