====== orthomolecular ====== adjective **Etymology:** ortho- (from the Greek //ὀρϑός//, straight) +‎ molecular (from molecule, from the scientific Latin //molecula//, //mole// diminutive of //moles//). 1. Relating to the theory saying that good health is possible when the right amount of the different molecules required by the human body is supplied. This theory states that illness is the result of chemical deficiencies, and can be cured with vitamins, minerals and other nutrients.