Cambridge Dictionaries online Cambridge Dictionaries online

The most popular online dictionary and thesaurus for learners of English


English definition of “hydrometer”


noun [C]     /haɪˈdrɒ.ɪ.tər/ US  /-drɑː.mə.t̬ɚ/ specialized
a piece of equipment used to measure the density (= amount of matter in a particular quantity ) of liquids , especially a long glass tube , closed and with a weight at one end so that it floats vertically Laboratory equipment
(Definition of hydrometer noun from the Cambridge Advanced Learner's Dictionary & Thesaurus © Cambridge University Press)
Focus on the pronunciation of hydrometer

Translations of “hydrometer”

Word of the Day


a good knowledge of something, or the fact that you know it so well

Word of the Day


Read our blog about how the English language behaves.

Learn More

New Words

Find words and meanings that have just started to be used in English, and let us know what you think of them.

Learn More