IPA: /kəˈlɪɡətɪv/
KK: /kəˈlɪɡətɪv/
Relating to properties that depend on the number of particles in a solution rather than the type of particles.
The boiling point elevation is an example of a colligative property.
Colligative is formed from "col-" (meaning together) and "ligare" (meaning to bind). The term refers to properties that depend on the number of solute particles in a solution, thus binding together the effects of those particles.
Think of 'binding together' ('col-' means together and 'ligare' means to bind) to remember that 'colligative' refers to properties that arise from the collective presence of solute particles.