stea·​rate ˈstē-ə-ˌrāt How to pronounce stearate (audio)
: a salt or ester of stearic acid

Example Sentences

Recent Examples on the Web Some common topical skin treatment agents can be particularly irritating for people with eczema, from fragrance oils to alcohol stearate. Amber Smith, Discover Magazine, 22 July 2022 Gorilla Mode also includes other ingredients like Vitamin B6, Vitamin B12, Bioperine, and magnesium stearate. Amber Smith, Discover Magazine, 17 Oct. 2022 Other common additive ingredients include magnesium stearate, microcrystalline cellulose, cinnamon, turmeric, milk thistle, and more. Dallas News, 17 Oct. 2022 Other ingredients like gelatin (for the capsule), magnesium stearate, microcrystalline cellulose, rice flour, and silicon dioxide (as commonly used fillers and binders). Mark Jackson, Discover Magazine, 13 May 2021 Sometimes manufacturers use filler ingredients like magnesium stearate or silicon dioxide to drive production costs down, but those ingredients provide no value. Norcal Marketing, Chron, 4 Feb. 2021 Clozapine, on the other hand, contains milk sugar (lactose) and magnesium stearate, both animal-based. Teresa Graedon, The Seattle Times, 2 June 2017 See More

These examples are programmatically compiled from various online sources to illustrate current usage of the word 'stearate.' Any opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback about these examples.

Word History

First Known Use

1839, in the meaning defined above

Time Traveler
The first known use of stearate was in 1839

Dictionary Entries Near stearate

Cite this Entry

“Stearate.” Dictionary, Merriam-Webster, Accessed 8 Jun. 2023.

Medical Definition


: a salt or ester of stearic acid
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