- sexadecimal
- sexadecimal notation
- sexadecimal number system
- sexadecimal system
- SEXAFS
- sexagesimal
- sexagesimal arithmetic
- sexagesimal cycle
- sexagesimal degree
- sexagesimal fraction
- sexagesimal notation
- sexagesimal number
- sexagesimal number system
- sexagesimal system
- sex allocation
- sex allocation theory
- Sex and the City
- sexangle
- sex attractant
- sex chromosome
- sex control
- sexdecillion
- sex determination
- sex determination based on skeleton
- sex-determining region on the Y chromosome gene