infinity

noun

USin-FIN-i-tee/ɪnˈfɪnɪti/

Pluralinfinities (some meanings)

5 meanings of infinity

1
without endnoununcountable
The state of having no start, no end, and no limit to how big something is.
Standing on the beach at night, he felt small next to the infinity of space.
The two mirrors facing each other made the hallway seem to stretch into infinity.
Similarendlessness, boundlessness, limitlessness, infinitude
Oppositefiniteness
Note
2
nouncountable
In math, a number that is endless in value and can never be counted.
No matter how long you keep counting, you will never reach infinity.
The scientists kept getting infinities in their answers, so they knew their math had a problem.
Note
3
symbolnouncountable or uncountable
The sign ∞, which looks like the number 8 lying on its side.
He has a small infinity tattooed on the inside of his wrist.
Her handwriting is so messy that her infinity looks like a squashed 8.
4
far end (math)nouncountable
In math, an imagined point that a list of numbers gets closer to as their size grows without end.
When n goes to infinity, the fraction 1 over n shrinks toward zero.
The arrows at each end of the number line point toward minus infinity and plus infinity.
Note
5
far enough (optics)noununcountable
A number so much bigger than some key number that it can be treated as endless.
For photos of faraway mountains, turn the lens focus all the way to infinity.
Stars are so far away that a telescope can treat them as sitting at infinity.
Note

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It comes from a Latin word meaning "unlimitedness," built from parts meaning "not" and "end." It came into English through French.