Etymology
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macromolecule (n.)

1886, "molecule consisting of several molecules," a sense now obsolete, from macro- + molecule. Apparently coined in "On Macro-molecules, with the Determinations of the Form of Some of Them," by Anglo-Irish physicist G. Johnstone Stoney (1826–1911). Originally of crystals. Meaning "molecule composed of many atoms" is by 1935, from German makromolekul (1922). Related: Macromolecular (by 1931).

updated on October 27, 2018

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Definitions of macromolecule from WordNet

macromolecule (n.)
any very large complex molecule; found only in plants and animals;
Synonyms: supermolecule
Etymologies are not definitions. From wordnet.princeton.edu, not affiliated with etymonline.