Definition of infinity
2 : an indefinitely great number or amount an infinity of stars
3a : the limit of the value of a function or variable when it tends to become numerically larger than any preassigned finite numberb : a part of a geometric magnitude that lies beyond any part whose distance from a given reference position is finite do parallel lines ever meet if they extend to infinityc : a transfinite number (as aleph-null)
4 : a distance so great that the rays of light from a point source at that distance may be regarded as parallel
Examples of infinity in a sentence
The view tapers off into infinity.
a series of numbers that continues to infinity
The night sky was filled with an infinity of stars.
First Known Use of infinity
INFINITY Defined for English Language Learners
Definition of infinity for English Language Learners
: the quality of having no limits or end : the quality of being infinite
: a space, amount, or period of time that has no limits or end
: a very great number or amount
INFINITY Defined for Kids
Definition of infinity for Students
1 : the quality of being without limits the infinity of space
2 : a space, quantity, or period of time that is without limit
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