"use of two or more rhythms simultaneously," 1911, probably a back formation from polyrhythmic.
"involving or using two or more rhythms, especially at the same time," 1883, from poly- + rhythmic.
updated on August 19, 2020
英语词源词典收录了45867条英语词源词条，基本涵盖了全部常用英语词汇的起源、历史，是研究英语词汇或通过词源学英语的必备工具。