The Collaborative International Dictionary of English v.0.48:

Fabulosity \Fab`u*los"i*ty\, n. [L. fabulositas: cf. F.
   fabulosit['e].]
   1. Fabulousness. [R.] --Abp. Abbot.
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   2. A fabulous or fictitious story. [R.] --Sir T. Browne.
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