macromolecule
noun
mac·ro·mol·e·cule ˌma-krō-ˈmä-li-ˌkyü(ə)l 
: a very large molecule (as of a protein or rubber)
macromolecular
ˌma-krō-mə-ˈle-kyə-lər
adjective 
Example Sentences
Recent Examples on the Web Last year, the Curiosity rover identified two sites flush with complex organic macromolecules that resemble the goopy building blocks of oil on Earth. 
Daniel Clery, Science | AAAS, 21 Nov. 2019 Quantum theory works extremely well at the scale of photons, electrons, atoms, molecules, even macromolecules. Wired, 9 Dec. 2018 Quantum theory works extremely well at the scale of photons, electrons, atoms, molecules, even macromolecules. Wired, 9 Dec. 2018 Quantum theory works extremely well at the scale of photons, electrons, atoms, molecules, even macromolecules. Wired, 9 Dec. 2018 Quantum theory works extremely well at the scale of photons, electrons, atoms, molecules, even macromolecules. Wired, 9 Dec. 2018 Quantum theory works extremely well at the scale of photons, electrons, atoms, molecules, even macromolecules. Wired, 9 Dec. 2018 Quantum theory works extremely well at the scale of photons, electrons, atoms, molecules, even macromolecules. Wired, 9 Dec. 2018 Last year, the Nobel Prize in Chemistry was given in part to Frances H. Arnold, who for decades has been studying macromolecules known as enzymes. David Grossman, Popular Mechanics, 2 Aug. 2019 See More
Daniel Clery, Science | AAAS, 21 Nov. 2019 Quantum theory works extremely well at the scale of photons, electrons, atoms, molecules, even macromolecules. Wired, 9 Dec. 2018 Quantum theory works extremely well at the scale of photons, electrons, atoms, molecules, even macromolecules. Wired, 9 Dec. 2018 Quantum theory works extremely well at the scale of photons, electrons, atoms, molecules, even macromolecules. Wired, 9 Dec. 2018 Quantum theory works extremely well at the scale of photons, electrons, atoms, molecules, even macromolecules. Wired, 9 Dec. 2018 Quantum theory works extremely well at the scale of photons, electrons, atoms, molecules, even macromolecules. Wired, 9 Dec. 2018 Quantum theory works extremely well at the scale of photons, electrons, atoms, molecules, even macromolecules. Wired, 9 Dec. 2018 Last year, the Nobel Prize in Chemistry was given in part to Frances H. Arnold, who for decades has been studying macromolecules known as enzymes. David Grossman, Popular Mechanics, 2 Aug. 2019 See More Word History
Etymology
borrowed from German Makromolekel (later Makromolekül), from makro- macro- + Molekel, Molekül molecule
First Known Use
1924, in the meaning defined above
Medical Definition
macromolecule
noun
mac·ro·mol·e·cule ˌmak-rō-ˈmäl-i-ˌkyü(ə)l
: a very large molecule (as of a protein, nucleic acid, or rubber) built up from smaller chemical structures compare micromolecule