infusoria
/ˌɪnfjʊˈzɔːrɪə/plural noun
- Zoology, dated single-celled organisms of the former group Infusoria, which consisted mainly of ciliate protozoans【动】〈旧〉纤毛虫纲。
词源
modern Latin, from Latin infundere （see INFUSE）; so named because they were originally found in infusions of decaying organic matter.