Lewis & Short

Ctēsĭbĭus, i, m.,

  1. I. a mechanic of Alexandria, distinguished for his inventions in hydraulics, Vitr. 9, 6 (al. 9), p. 280 Bip.
    Hence,
  2. II. Ctēsĭbĭcus, a, um, adj., of Ctesibius: machina, Vitr. 10, 12.