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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While scientists have long observed this liquid-to-solid transformation, the exact molecular link that converts these fluid droplets into a high-performance final structure has remained a mystery until now.
—
Mrigakshi Dixit, Interesting Engineering, 6 Feb. 2026
Although Mercury was close enough to the Sun and small enough that its atmosphere was fully stripped away long ago, Venus was more distant and more massive, and managed to hold onto its more massive molecular species, particularly its carbon dioxide.
—Big Think, 5 Feb. 2026
According to the team, this shows how molecular traces of the past can be made into meaningful cultural experiences in the present.
—Laura Baisas, Popular Science, 5 Feb. 2026
Fats from oil interact with plastic at the molecular level, which can cause the plastic to break down over time as well.
—Taylor Tobin, Southern Living, 5 Feb. 2026
See All Example Sentences for molecular
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Mrigakshi Dixit, Interesting Engineering, 6 Feb. 2026
Although Mercury was close enough to the Sun and small enough that its atmosphere was fully stripped away long ago, Venus was more distant and more massive, and managed to hold onto its more massive molecular species, particularly its carbon dioxide.
—Big Think, 5 Feb. 2026
According to the team, this shows how molecular traces of the past can be made into meaningful cultural experiences in the present.
—Laura Baisas, Popular Science, 5 Feb. 2026
Fats from oil interact with plastic at the molecular level, which can cause the plastic to break down over time as well.
—Taylor Tobin, Southern Living, 5 Feb. 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 11 Feb. 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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