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building block

noun

: 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.
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 This four-tone greeting is not a specific communication per-se, but the nucleotides of guanine, uracil, adenine, and cytosine, which represent the building blocks of RNA. Jeff Spry, Space.com, 14 Nov. 2025 The formula combines antioxidant-rich grape seed and sweet almond oils with polypeptides (long chains of amino acids that act as building blocks for collagen and elastin) to help boost skin’s elasticity and resilience. Jamie Ballard, Allure, 14 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 29 Nov. 2025.

Kids Definition

building block

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