Entry 1 sense Webster, 1913 Holotricha /(hō̇*lŏt"rĭ*kȧ)/ · Ho·lot·ri·cha · IPA 01 n. pl. A group of ciliated Infusoria, having cilia all over the body. 1. A group of ciliated Infusoria, having cilia all over the body.(Zool.)