firmo in Enrico Olivetti, editor(2003-2025)Dizionario Latino, Olivetti Media Communication
Erreur Lua dans Module:R:Perseus à la ligne 164 : attempt to index field'?' (a nil value).Charlton T. Lewis and Charles Short(1879)A Latin Dictionary, Oxford: Clarendon Press
Charlton T. Lewis(1891)An Elementary Latin Dictionary, New York: Harper & Brothers
firmo in Gaffiot, Félix(1934)Dictionnaire illustré Latin-Français, Hachette
Carl Meißner; Henry William Auden(1894)Latin Phrase-Book, London:Macmillan and Co.
to garrison a town:praesidiis firmare urbem
to strengthen the camp by outposts:castra praesidiis firmare