pyriform
adjective
pyr·i·form ˈpir-ə-ˌfȯrm 
variants or piriform
: having the form of a pear
a pyriform shape
pyriform jars
see also piriform cortex 
Word History
Etymology
New Latin pyriformis, from Medieval Latin pyrum pear (alteration of Latin pirum) + Latin -iformis -iform
First Known Use
1717, in the meaning defined above