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Showing results for molecular. Search instead for Molecular+Mass.
Synonyms

molecular

American  
[muh-lek-yuh-ler] / məˈlɛk jə lər /

adjective

  1. of or relating to or caused by molecules.

    molecular structure.


molecular British  
/ məʊˈlɛkjʊlə, mə- /

adjective

  1. of or relating to molecules

    molecular hydrogen

  2. logic (of a sentence, formula, etc) capable of analysis into atomic formulae of the appropriate kind

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Other Word Forms


Etymology

Origin of molecular

First recorded in 1815–25; molecule + -ar 1


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Explanation

Use the adjective molecular to describe something that has to do with or is made up of molecules. If you're studying molecular biology, you're focusing on the molecules that make up living things. When a scientist studies things on a molecular level, she's looking at them up close, examining their cells. The adjective molecular comes up most often in biology and chemistry, and it always describes the very smallest units that make up organisms or elements. Molecular comes from the noun molecule, which means "extremely minute particle," from the Latin molecula, "tiny mass."

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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.

See Examples For:

For now, the research reinforces the importance of exercise while revealing that its benefits depend on an intricate network of molecular processes inside muscle cells.

From Science Daily ● Oct. 16, 2026

One possibility is that adjusting DEAF1 activity could reproduce some of the molecular changes normally triggered by physical activity.

From Science Daily ● Oct. 16, 2026

The discovery became even more intriguing when scientists examined the enzyme's molecular structure.

From Science Daily ● Oct. 16, 2026

The two most advanced types of protein degraders are known as Protacs, or proteolysis targeting chimeras, and molecular glue.

From The Wall Street Journal ● Oct. 15, 2026

Its air is thin, containing mostly carbon dioxide but also some molecular nitrogen and argon and very small quantities of water vapor, oxygen and ozone.

From "Cosmos" by Carl Sagan

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