adjective (a)

• relating to or produced by or consisting of molecules(adj.pert)

  Example:
  Molecular structure.
  Molecular oxygen.
  Molecular weight is the sum of all the atoms in a molecule.
  

  source: wordnet30
• relating to simple or elementary organization(adj.all)

  Example:
  Proceed by more and more detailed analysis to the molecular facts of perception.
  

  Antonym:
  molar
  

  source: wordnet30
• Pertaining to, connected with, produced by, or consisting of, molecules; as, molecular forces; molecular groups of atoms, etc.(adjective)

  source: webster1913