pedicul medical definition
Medical Definition of pediculus. 1  1 capitalized : a genus of lice of the family Pediculidae that includes the body louse (P. humanus humanus synonym P. h. corporis) and head louse (P. humanus capitis) infesting humans. 2  2plural pediculi \-ËlÄ«\play or pediculus : any louse of the genus Pediculus.