巨きょ大だい分ぶん子しきょだいぶんしMeanings1nounmacromoleculeScientific term for a very large molecule, such as a polymer, protein, or nucleic acid. Used in chemistry and biology.DNAは巨きょ大だい分ぶん子しの一いっ種しゅです。DNA is a type of macromolecule.