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.
Aiding collagen production: Vitamin C is an important cofactor, or partner, for the enzymes that build collagen, the skin’s primary building block. Adam Hurly, Robb Report, 29 July 2025 But in a paper just published in the journal Nature Communications, lead author, Matthew Genge, a geologist at Imperial College London, and colleagues argue that the building blocks of life had their origins in an intensely turbulent region of space close to our giant planet Jupiter. Bruce Dorminey, Forbes.com, 27 July 2025 One person’s words, one action — say, for instance, a simple no — becomes the building block for another small action, and another, even if that action is not obvious. Pat Beall, The Orlando Sentinel, 20 July 2025 Serine functions as a building block for proteins, is involved in cell proliferation, and various metabolic pathways. New Atlas, 19 July 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 5 Aug. 2025.

Kids Definition

building block

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