adj.
Pronunciation: ˌ n ā -t ə - ' to ̇ r- ē - ə l, ˌ na-
Variant: or na · ta · to · ry \ ' n ā -t ə - ˌ to ̇ r- ē , ' na- \
Function: adjective
Date: 1816
1 : of or relating to swimming
2 : adapted to or characterized by swimming <a natatorial leg of an aquatic insect>