Webster's English Dictionary

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infinity

in.fin.i.ty \in-'fin-*t-e-\ n 1a: the quality of being infinite  1b: 
   unlimited extent of time, space, or quantity : BOUNDLESSNESS  2: an 
   indefinitely great number or amount  3a: the limit of a function that can 
   be made to become and remain numerical ly larger than any preassigned value 
   3b: a part of a geometric magnitude that lies beyond any part whose distanc 
   e from a given reference position is finite 4: a distance so great that the 
   rays of light from a point source at that d istance may be regarded as 
   parallel