1. basic principles or assumptions accepted as true without proof
Usage: plural of postulate

1. assumes or claims something as true without proof
Usage: third person singular present

Examples

• The geometry textbook begins with five basic postulates.
• Euclid’s postulates form the foundation of plane geometry.
• The theory postulates that all matter is made of atoms.
• She postulates a connection between diet and mood.
• These mathematical postulates cannot be proven but must be accepted.
• The scientist postulates that climate change affects migration patterns.
• Ancient philosophers developed postulates about the nature of reality.