rotameter

noun

ro·​ta·​me·​ter ˈrō-tə-ˌmē-tər  rō-ˈta-mə-tər 

: a gauge that consists of a graduated glass tube containing a free float for measuring the flow of a fluid

Word History

Etymology

Latin rota + English -meter

First Known Use

1897, in the meaning defined above

Medical Definition

rotameter

noun

ro·​ta·​me·​ter ˈrōt-ə-ˌmēt-ər  rō-ˈtam-ət- 

: a gauge that consists of a graduated glass tube containing a free float for measuring the flow of a liquid or gas