1. (mathematics) any of five axioms that are generally recognized as the basis for Euclidean geometry
   - Euclid's postulate, Euclidean axiom

Type of: axiom

• genus Anastatica
• genus Anastomus
• genus Anatotitan
• genus Anchusa
• genus Ancistrodon
• genus Ancylus
• genus Andira
• genus Andreaea
• genus Andrena
• genus Andricus
• genus Andromeda
• genus Andropogon
• genus Andryala
• genus Aneides
• genus Anemia
• genus Anemone
• genus Anemonella
• genus Anemopsis
• genus Anethum
• genus Angelica
• genus Angiopteris
• genus Angraecum
• genus Angrecum
• genus Anguilla
• genus Anguillula