infinity Meaning & Definition
What Does Infinity Mean?
Infinity is a noun that means the quality of being infinite. It can also mean unlimited extent of time, space, or quantity.
Infinity: Key Facts
| Part of speech | noun |
|---|---|
| Pronunciation | /in-ˈfi-nə-tē/ |
| Syllables | 4 |
| Synonyms | eternity, forever and everlasting |
| Antonyms | ephemerality, impermanence and temporariness |
| Plural | infinities |
Infinity Definition (Noun)
- the quality of being infinite
- unlimited extent of time, space, or quantity : boundlessness
The view tapers off into infinity.
- an indefinitely great number or amount
an infinity of stars
- the limit of the value of a function or variable when it tends to become numerically larger than any preassigned finite number
- 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 infinity?
- a transfinite number (such as aleph-null)
- a distance so great that the rays of light from a point source at that distance may be regarded as parallel
Synonyms of Infinity
Infinity synonyms and antonyms →Antonyms of Infinity
Infinity in a Sentence
concept of infinity
The desert stretched out toward the horizon as if into infinity.
The view tapers off into infinity.
an infinity of stars
Do parallel lines ever meet if they extend to infinity?
it seemed as though that meeting might extend into infinity
Word Forms & Grammar
in·fin·i·ties
infinities
infinity
infinity (countable and uncountable, plural infinities)
Words That Rhyme With Infinity
Origin of Infinity
Origin 1: Middle English infinite, borrowed from Anglo-French infinité, borrowed from Latin infīnitāt-, infīnitās, from in- in-:1 + fīnis "boundary, limit, terminal point, ending" + -itāt-, -itās -ity final:1
Origin 2: From Middle English infinite, from Old French infinité, from Latin īnfīnitās (“unlimitedness”), from negative prefix in- (“not”), + fīnis (“end”), + noun of state suffix -tās. By surface analysis, infinite + -ity.
First Known Use
14th century
Pronouncing Infinity
You say infinity as /in-ˈfi-nə-tē/. It has 4 syllables, with the main stress on the second syllable (fi).
Frequently Asked Questions About Infinity
What part of speech is infinity?
Infinity is a noun.
What is another word for infinity?
You can replace infinity with words such as eternity, forever and everlasting. See the full list of infinity synonyms and antonyms.
What is the opposite of infinity?
Antonyms of infinity include ephemerality, impermanence, temporariness and transience.
What is the plural of infinity?
The plural of infinity is infinities.