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building block

noun

Synonyms of building blocknext
: a unit of construction or composition
especially : something essential on which a larger entity is based

Examples of building block in a Sentence

historically the infantry division has been a basic building block of armies
Recent Examples on the Web
Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
Protein is made up of amino acids, which are known as building blocks. Karen Berger, Verywell Health, 30 Nov. 2025 Wine Terms to Know Structure Intensity of flavor, richness of body, acidity, and tannins are all building blocks that lend structure to wine. Anna Lee C. Iijima, Bon Appetit Magazine, 24 Nov. 2025 They are developed through a combination of activities, which are the essential building block of work. Ben Zweig, Fortune, 21 Nov. 2025 View gallery - 7 images Functioning a little like oversized Lego, the versatility of shipping containers ensures that architects never run out of ideas for using them as building blocks. New Atlas, 6 Oct. 2025 See All Example Sentences for building block

Word History

First Known Use

1756, in the meaning defined above

Time Traveler
The first known use of building block was in 1756

Cite this Entry

“Building block.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/building%20block. Accessed 11 Dec. 2025.

Kids Definition

building block

noun
: a unit of construction or composition
Last Updated: - Updated example sentences
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