: of or relating to a murid genus (Mus) or its subfamily (Murinae) which includes the common household rats and micealso: of, relating to, or involving these rodents and especially the house mouse
1a: of or relating to the genus Mus or to its subfamily (Murinae) that includes most of the rats and mice which habitually live in intimate association with humans
murine rodents
b: of, relating to, or produced by the house mouse
a murine odor
2: affecting or transmitted by rats or mice
murine rickettsial diseases