Lewis Short
nŭmĕrōsĭtas (noun F) : numerosus.
* A great number, multitude (post-class.): numerositas innumera,Macr. S. 5, 20: filiarum,Tert. Monog. 4: curialium, Cod. Th. 12, 5, 3: Scriptorum,Sid. Carm. 23, 150.
* Rhythm, harmony, Aug. Doctr. Christ. 4, 20; id. ib. 55, 109.
Charlton T. Lewis, Charles Short, A Latin Dictionary