Melacio \m(e)-la-cio\ as a boy's name is a variant of Melesio (Spanish, Greek), and the meaning of Melacio is "careful, attentive".
The baby name Melacio sounds like Melicio, Melecio and Melasio. Other similar baby names are Felicio, Alicio, Alucio, Allucio, Felizio, Maceo, Malachi, Malakie, Malakia, Malaki, Malachy, Malachie, Marcio, Milesio, Meliseo and Mellin.