n.
Pronunciation: ' plan-y ə -l ə
Function: noun
Inflected Form: plural -lae \ - ˌ l ē , - ˌ l ī \
Etymology: New Latin, from Latin planus level, flat ― more at FLOOR
Date: 1870
: the very young usually flattened oval or oblong free-swimming ciliated larva of a coelenterate