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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Such advances are particularly valuable in drug discovery, where precise molecular design is essential, as well as in the development of advanced materials and agrochemicals.
—
Prabhat Ranjan Mishra, Interesting Engineering, 8 Jan. 2026
This revealed that the molecular cloud was acting as a cosmic mirror, reflecting X-rays previously emitted by Sgr A* flares.
—Robert Lea, Space.com, 8 Jan. 2026
Changing the way nylon assembles in the molecular stage can transform it from a solidly unyielding material like climbing rope into something with more buoyancy—for instance, a sports bra.
—Jasmin Malik Chua, Sourcing Journal, 5 Jan. 2026
The drug’s molecular structure has been public for years, since Eli Lilly published it in a research paper in 2022.
—Sarah Zhang, The Atlantic, 23 Dec. 2025
See All Example Sentences for molecular
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Prabhat Ranjan Mishra, Interesting Engineering, 8 Jan. 2026
This revealed that the molecular cloud was acting as a cosmic mirror, reflecting X-rays previously emitted by Sgr A* flares.
—Robert Lea, Space.com, 8 Jan. 2026
Changing the way nylon assembles in the molecular stage can transform it from a solidly unyielding material like climbing rope into something with more buoyancy—for instance, a sports bra.
—Jasmin Malik Chua, Sourcing Journal, 5 Jan. 2026
The drug’s molecular structure has been public for years, since Eli Lilly published it in a research paper in 2022.
—Sarah Zhang, The Atlantic, 23 Dec. 2025
See All Example Sentences for molecular
Cite this Entry
“Molecular.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/molecular. Accessed 13 Jan. 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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