flowmeter
noun
flow·me·ter ˈflō-ˌmē-tər 
: an instrument for measuring one or more properties (such as velocity or pressure) of a flow (as of a liquid in a pipe)
Example Sentences
Recent Examples on the Web Over a period of nine minutes, Herbreteau closely observes the flowmeter -- a device that measures the speed of the water that passes through. 
Maggie Hiufu Wong, CNN, 16 June 2022 The company, which leased 31,804 square feet, provides automated inspection systems, flowmeters, cleaning tools, coatings and instruments to the oil and gas industry. Katherine Feser, Houston Chronicle, 20 Mar. 2020
Maggie Hiufu Wong, CNN, 16 June 2022 The company, which leased 31,804 square feet, provides automated inspection systems, flowmeters, cleaning tools, coatings and instruments to the oil and gas industry. Katherine Feser, Houston Chronicle, 20 Mar. 2020 Word History
First Known Use
1915, in the meaning defined above
Medical Definition
flowmeter
noun
flow·me·ter ˈflō-ˌmēt-ər
: an instrument for measuring the velocity of flow of a fluid (as blood) in a tube or pipe