1. the property of having the same atomic number but different mass numbers
Usage: chemistry; physics
2. a continuous deformation of one mathematical object into another
Usage: mathematics; topology

Examples

• The isotopy of carbon-12 and carbon-14 makes them chemically identical.
• Hydrogen and deuterium demonstrate isotopy in their nuclear structure.
• The mathematician studied the isotopy between two geometric shapes.
• Isotopy allows topologists to classify surfaces by their deformation properties.
• Understanding isotopy is crucial for nuclear chemistry applications.
• The isotopy of uranium isotopes affects their radioactive decay rates.