amino acids
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Amino acids are the basic molecular building blocks of proteins.
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.
Researchers have considered alternative amino acids, alternative solvents, and even entirely different chemical structures.
From Science Daily • Jun. 24, 2026
Phenylalanine and tyrosine are two amino acids that help regulate metabolism and brain activity.
From Science Daily • Jun. 15, 2026
“You build on the brain’s natural ability to bring in important things, like iron or amino acids, and catch a ride,” he says.
From Barron's • Jun. 3, 2026
Peptides—short chains of amino acids marketed for recovery, muscle growth and antiaging—have become popular among U.S. wellness figures including Robert F. Kennedy Jr. and Joe Rogan, despite limited evidence for many of their claimed benefits.
From The Wall Street Journal • May 29, 2026
Chemical reactions like those in our laboratory vessels may be responsible for the organic matter in interstellar space and the amino acids found in meteorites.
From "Cosmos" by Carl Sagan
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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.