[pol-ee-key-zhee-uh m, -zhuh m, -zee-uh m]
noun, plural pol·y·cha·si·a [pol-ee-key-zhee-uh, -zhuh, -zee-uh] /ˌpɒl iˈkeɪ ʒi ə, -ʒə, -zi ə/. Botany.
  1. a form of cymose inflorescence in which each axis produces more than two lateral axes.

Origin of polychasium

From New Latin; see origin at poly-, dichasium
Related formspol·y·cha·si·al, adjective
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

British Dictionary definitions for polychasium


noun plural -sia (-zɪə)
  1. botany a cymose inflorescence in which three or more branches arise from each node

Word Origin for polychasium

C20: from New Latin, from poly- + -chasium as in dichasium
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012