Not divisible without losing its identity.
Intended for a single person as opposed to more than one person.
Relating to a single person or thing as opposed to more than one.
An object, be it a thing or an agent, as contrasted to a class.
A person considered alone, rather than as belonging to a group of people.
An element belonging to a population.
A single physical human being as a legal subject, as opposed to a legal person such as a corporation.
Incapable of being divided; atomic.
Incapable of being divided by a specific integer without leaving a remainder.
An infinitely small quantity which is assumed to admit of no further division.
That which cannot be divided or split.