/ ɪnˈfɪnəti; NAmE / noun ( pl. -ies )
1.
[ U ] (also in·fin·it·ies [pl.] ) the state of having no end or limit :
the infinity / infinities of space
2.
[ U ] a point far away that can never be reached :
The landscape seemed to stretch into infinity.
3.
( symb ∞ ) [ U , C ] ( mathematics ) a number larger than any other
4.
[ sing. ] a large amount that is impossible to count :
an infinity of stars
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WORD ORIGIN
late Middle English : from Old French infinite or Latin infinitas , from infinitus , from in- not + finitus finished, finite, past participle of finire , from finis end.