In science, a molecule is a structure built of atoms bound together by chemical forces or as a structure in which two or more nuclei are maintained in some geometrical configuration by attractive forces from a surrounding swarm of negative electrons. [1]

In human chemistry, the term "human molecule" is the chemical definition of one human being.

Futher reading
● Maxwell, James. (1873). “Molecules”, Nature, 8: 437-41; Phil. Mag. [4], 453-69; Maxwell’s Scientific Papers, Vol. 2, 361-78; Maxwell on Molecules and Gases, section 16: “Molecules” (reprint), 137-40, MIT Press, 1986

References
1. Licker, Mark D. (2002). McGraw-Hill Concise Encyclopedia of Chemistry. New York: McGraw-Hill.

External links
● Molecule – Wikipedia.