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
Recent Examples on the Web
Once tests can be mass produced, they are expected to reach the local market at a quarter of the price of the molecular PCR tests.
—
Alex Harrington, MSNBC Newsweek, 17 Sep. 2025
Laboratory analyses cited in the paper, including X-ray diffraction and infrared spectroscopy, revealed molecular changes in bone consistent with exposure to heat at relatively low intensities, pointing to prolonged smoking rather than high-temperature burning or natural dry environments.
—Kaif Shaikh, Interesting Engineering, 16 Sep. 2025
Formed the same way that all stellar and planetary systems form, our own Solar System formed from the contraction of a molecular cloud that triggered new star formation, giving rise to the Earth, the Sun, and more.
—Ethan Siegel, Big Think, 16 Sep. 2025
Rebecca Schmidt, a molecular epidemiologist and professor at UC Davis, has been researching potential risk factors for autism as part of the school’s long-term MARBLES study of mothers and children.
—Zoë Schlanger, The Atlantic, 16 Sep. 2025
See All Example Sentences for molecular
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Alex Harrington, MSNBC Newsweek, 17 Sep. 2025
Laboratory analyses cited in the paper, including X-ray diffraction and infrared spectroscopy, revealed molecular changes in bone consistent with exposure to heat at relatively low intensities, pointing to prolonged smoking rather than high-temperature burning or natural dry environments.
—Kaif Shaikh, Interesting Engineering, 16 Sep. 2025
Formed the same way that all stellar and planetary systems form, our own Solar System formed from the contraction of a molecular cloud that triggered new star formation, giving rise to the Earth, the Sun, and more.
—Ethan Siegel, Big Think, 16 Sep. 2025
Rebecca Schmidt, a molecular epidemiologist and professor at UC Davis, has been researching potential risk factors for autism as part of the school’s long-term MARBLES study of mothers and children.
—Zoë Schlanger, The Atlantic, 16 Sep. 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 20 Sep. 2025.
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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