Invertebrata
noun plural
In·ver·te·bra·ta
| \ (ˌ)in-ˌvərt-ə-ˈbrät-ə
, -ˈbrāt-ə
\
, -ˈbrāt-ə
\
Medical Definition of Invertebrata
in some especially former classifications
: a primary division of the animal kingdom including all except the Vertebrata