Having a flagellum or flagella at both extremities of a microbial cell; denoting certain microorganisms. ... Origin: amphi-+ G. Thrix, hair ... (05 Mar 2000) ... 
(am-fit´rĭ-kәs) having flagella at each end.
amphitrichous, amphitrichate Having a flagellum or flagella (hairlike structures) at both extremities of a microbial cell; denoting certain microorganisms.
having two flagella or tufts of multiple flagella, with one flagellum or tuft located at each end of the bacterial cell