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Webster 1913 Edition

Adj.

(Chem. & Physics)

Between molecules; situated, or acting, between the molecules of bodies.

[Obs.]

intramolecular ‎(not comparable)

between parts of a molecule

Polish: wewnątrzcząsteczkowy (pl) m
Russian: внутримолекулярный (ru) ‎(vnutrimolekuljarnyj), интрамолекулярный (ru) ‎(intramolekuljarnyj)