A duck-billed platypus.
nounpl. platypuses or platypi
Origin of platypusModern Latin ; from Classical Greek platypous, flatfooted ; from platys, flat (see platy-) + pous, foot
Origin of platypusNew Latin Platypūs, former genus name, from Greek platupous, flat-footed : platu-, platy- + pous, foot; see ped- in Indo-European roots.
From Medieval Latin Platypus (originally a genus name, but already used for a type of beetle), from Ancient Greek πλατύπους (platypous, “flat-footed”), from πλατύς (platys, “flat”) + πούς (pous, “foot”).