molecular
adjective
mo·lec·u·lar
mə-ˈle-kyə-lər 
1
: of, relating to, consisting of, or produced by molecules
molecular oxygen
2
: of or relating to individual or small components
a molecular view of the American Civil War
Examples of molecular in a Sentence
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Those floodwaters likely diluted pesticides beyond hazardous levels, said Qing Li, a professor at the University of Hawaii’s molecular bioscience and bioengineering department.
—
Thomas Heaton, Los Angeles Times, 10 Apr. 2026
The cell does this with a membrane permeable enough to let nutrients in but solid enough to hold the cell together, plus molecular controls to modulate that permeability as needed.
—Amanda Gefter, Quanta Magazine, 10 Apr. 2026
The researchers subjected amputated tissues from tadpoles and embryonic mice to various laboratory tests, explains molecular biologist Georgios Tsissios, the study’s lead author.
—Jackie Flynn Mogensen, Scientific American, 9 Apr. 2026
Proteins are the molecular machines that carry out most functions in living cells.
—Stephen D. Turner, The Conversation, 9 Apr. 2026
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Thomas Heaton, Los Angeles Times, 10 Apr. 2026
The cell does this with a membrane permeable enough to let nutrients in but solid enough to hold the cell together, plus molecular controls to modulate that permeability as needed.
—Amanda Gefter, Quanta Magazine, 10 Apr. 2026
The researchers subjected amputated tissues from tadpoles and embryonic mice to various laboratory tests, explains molecular biologist Georgios Tsissios, the study’s lead author.
—Jackie Flynn Mogensen, Scientific American, 9 Apr. 2026
Proteins are the molecular machines that carry out most functions in living cells.
—Stephen D. Turner, The Conversation, 9 Apr. 2026
See All Example Sentences for molecular
Cite this Entry
“Molecular.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/molecular. Accessed 17 Apr. 2026.
Copy CitationKids Definition
molecular
adjective
mo·lec·u·lar
mə-ˈlek-yə-lər
: of, relating to, or produced by molecules
Medical Definition
molecular
adjective
mo·lec·u·lar
mə-ˈlek-yə-lər
1
: of, relating to, consisting of, or produced by molecules
molecular oxygen
2
: relating to or emphasizing individual responses or structures of behavior
proceed by more and more detailed analysis to the molecular facts of perception—G. A. Miller
compare molar entry 3 sense 2
G. A. MillerLove words? Need even more definitions?
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