Definition of pleiochasium in English:
pleiochasium
Pronunciation /ˌplʌɪəˈkeɪzɪəm/
noun
Botany
A cyme in which branching is continued by more than two lateral axes. Compare "monochasium", "dichasium".
Origin
Late 19th century; earliest use found in The Century Dictionary. From pleio- + -chasium.