Lewis Short
(adjective) = Περιπατητικός: Pĕrĭpătētĭcus, a, um
* Of or belonging to the Peripatetic (Aristotelian) philosophy, Peripatetic: peripatetica secta,Col. 9, 3, 1: philosophia,Gell. 1, 3, 10: disciplina,id. 19, 5, 2.—As subst.: Pĕrĭpătētĭcus, i, m., a disciple of the Peripatetic school, Gell. 2, 18, 8.— Usually in plur.: Pĕrĭpătētĭci, ōrum, m., philosophers of the Peripatetic (Aristotelian) school, Peripatetics, Cic. Ac. 1, 4, 17; id. Tusc. 4, 3, 6; Col. 1, 1, 7; Varr. R. R. 1, 1, 8. They were so called because Aristotle delivered his lectures while walking about (περιπατῶν).
Charlton T. Lewis, Charles Short, A Latin Dictionary