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

molecularly

mə-ˈle-kyə-lər-lē 

adverb

Examples of molecular in a Sentence

Recent Examples on the Web

The model builds on the original AlphaGenome, which maps molecular activity across a broad range of tissues and covers both coding and non-coding regions of the genome. — Neetika Walter, Interesting Engineering, 12 Nov. 2026

The amount and quality of evidence varies among the six, but all have shown potential in the lab to influence processes related to repair and recovery at the cellular or molecular level. — Los Angeles Times, 11 Nov. 2026

In our chemical soup, that possibility comes from a stray molecule C, which like a mutation tips a bubble into a different molecular loop. — Perri Thaler, Quanta Magazine, 10 Nov. 2026

Polypropylene offers low weight, durability and quick drying but is difficult to dye—with said resistance to conventional dyeing stemming from its molecular structure. — Alexandra Harrell, Footwear News, 9 Nov. 2026

Word History

First Known Use

1770, in the meaning defined at sense 1

Phrases Containing molecular

• gram molecular weight
• molecular biology
• molecular chaperone
• molecular formula
• molecular genetics
• molecular mass
• molecular orbital
• molecular sieve
• molecular weight

Rhymes for molecular

• trabecular
• bimolecular
• biomolecular
• intermolecular
• intramolecular
• macromolecular
• monomolecular
• supramolecular
• unimolecular
• secular
• specular

Kids 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

molecularity

-ˌlek-yə-ˈlar-ət-ē 

noun

plural molecularities

molecularly

mə-ˈlek-yə-lər-lē 

adverb