Is Undefined a Real Word?

without fixed limits; indefinite in form, extent, or application: undefined authority; undefined feelings of sadness. not given meaning or significance, as by a definition; not defined or explained: an undefined term.

Is undefined a real number?

Non-Real Numbers, Undefined Numbers, and Empty Sets. ... This states that a set of numbers exists theoretically, but can't contain anything. This is for when something can not be done, like dividing by zero, because it is impossible (or very, very hard) to divide something by nothing.

What is number undefined?

Broadly speaking, undefined means there is no possible value (or there are infinite possible values), while indeterminate means there is no value given the current information.