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noun, plural: micromolecules

A molecule that is relatively smaller (than a macromolecule), or of low molecular weight.


Monomers are considered a micromolecule that can be linked together to form polymer (which is a macromolecule). Inorganic compounds like water and minerals are examples of micromolecules.

Word origin: micro (small) + molecule.
Related forms: micromolecular (adjective)

Compare: macromolecule

See also: biomolecule