primary structure
Americannoun
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Biochemistry. the basic sequence of amino acids in a polypeptide or protein.
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the basic parts of an aircraft, damage to which would be dangerous.
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The linear sequence of amino acids in a protein.
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See also quaternary structure secondary structure tertiary structure
Example Sentences
Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.
Inside the primary structure, visitors will find bright open spaces, elegant design details, and many communal living areas, ideal for those with a fondness for entertaining.
From MarketWatch • Mar. 31, 2026
The fuselage is the primary structure of an aircraft, forming the outer shell.
From Barron's • Dec. 3, 2025
The primary structure of a protein is composed of different amino acids coming together.
From Science Daily • May 30, 2024
Larger homes are now commonplace: The median new primary structure size in 2020 in the proposed wildlife ordinance area was 8,854 square feet, according to the city.
From Los Angeles Times • Jul. 30, 2023
These dealt with the composition of the hereditary material, and they contained new hypotheses concerning the primary structure of the cell-body.
From The Biological Problem of To-day Preformation Or Epigenesis? The Basis of a Theory of Organic Development by Hertwig, Oscar
Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023
Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.
