• (a.) Sharply cut about halfway to the middle or base into five segments; as, a quinquefid leaf or corolla.
Quin'que·fid adjective [ Quique- + the root of Latin findere to cleave: confer French quinquéfide .] (Botany) Sharply cut about halfway to the middle or base into five segments; as, a quinquefid leaf or corolla. 
cleft into five parts or lobes.