hydrometer
noun
hy·drom·e·ter
hī-ˈdrä-mə-tər 
: an instrument for determining the specific gravity of a liquid (such as battery acid or an alcohol solution) and hence its strength
Examples of hydrometer in a Sentence
Recent Examples on the Web
When the hydrometer becomes steady, look at where the fluid plane lines up on the hydrometer to get a reading.
—
Bestreviews, Chicago Tribune, 13 June 2025
The hydrometer shattered, filling the brew with glass and mercury beads.
—Byjasmine Li, Fortune, 10 Feb. 2024
The first, the hydrometer, was designed to measure liquids and could be used for various purposes, including measuring medicines.
—Emilie Le Beau Lucchesi, Discover Magazine, 7 June 2023
If not, it can be measured with a tool called a hydrometer.
—Dallas News, 12 Jan. 2023
At 6 or 7 p.m., Schmitz and his family will check the syrup with a spoon and with a hydrometer — an instrument for measuring sugar content, Schmitz said.
—Tyler Langan, Milwaukee Journal Sentinel, 11 Apr. 2018
That includes tools such as the hydrometer, containers to ferment and age, yeast, preservatives and, of course, the grapes.
—Carolyn Wilke, sacbee, 1 Aug. 2017
From scientific gadgets like the hydrometer, used to measure the density of sugar in liquids, to practical concerns like empty bottles, Maryland Homebrew is packed.
—Kit Waskom Pollard, Howard County Times, 3 May 2017
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Bestreviews, Chicago Tribune, 13 June 2025
The hydrometer shattered, filling the brew with glass and mercury beads.
—Byjasmine Li, Fortune, 10 Feb. 2024
The first, the hydrometer, was designed to measure liquids and could be used for various purposes, including measuring medicines.
—Emilie Le Beau Lucchesi, Discover Magazine, 7 June 2023
If not, it can be measured with a tool called a hydrometer.
—Dallas News, 12 Jan. 2023
At 6 or 7 p.m., Schmitz and his family will check the syrup with a spoon and with a hydrometer — an instrument for measuring sugar content, Schmitz said.
—Tyler Langan, Milwaukee Journal Sentinel, 11 Apr. 2018
That includes tools such as the hydrometer, containers to ferment and age, yeast, preservatives and, of course, the grapes.
—Carolyn Wilke, sacbee, 1 Aug. 2017
From scientific gadgets like the hydrometer, used to measure the density of sugar in liquids, to practical concerns like empty bottles, Maryland Homebrew is packed.
—Kit Waskom Pollard, Howard County Times, 3 May 2017
Cite this Entry
“Hydrometer.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/hydrometer. Accessed 31 Oct. 2025.
Copy CitationKids Definition
hydrometer
noun
hy·drom·e·ter
hī-ˈdräm-ət-ər
: an instrument for finding out the strength of a liquid (as battery acid or an alcohol solution) by measuring its specific gravity
Medical Definition
hydrometer
noun
hy·drom·e·ter
hī-ˈdräm-ət-ər
: an instrument for determining the specific gravity of a liquid (as an alcohol or saline solution) and hence its strength
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