polyphyodont
/ˌpɒlɪˈfʌɪə(ʊ)dɒnt/Zoology
adjective
Of a vertebrate: having teeth that are continually being lost and replaced.
Origin
Late 19th century; earliest use found in Francis Bell (1855–1924). From German polyphyodont from poly- + ancient Greek -ϕυής + German -odont.