gravitropismWiktionary 原文英美构词拆解gravigravi-前缀tropism-tropism后缀gravi-gravity-tropism(sciences) movement, turning. · (biology) growth towards.词源说明From gravi- + -tropism.释义名词noun1(biology, botany) A plant's ability to change its growth in response to gravity.同族词派生词 4agravitropism·gravitropic·orthogravitropism·