Lewis Short
Ctēsĭbĭus | Ctēsĭbĭcus, a, um (noun M) :
* A mechanic of Alexandria, distinguished for his inventions in hydraulics, Vitr. 9, 6 (al. 9), p. 280 Bip.—Hence
* Adj., of Ctesibius: machina,Vitr. 10, 12.
Charlton T. Lewis, Charles Short, A Latin Dictionary