"od: a hypothetical force formerly held to pervade all nature and to manifest itself in magnetism, mesmerism, chemical action, etc."

Huh. I thought that was something they made up for Atomic Robo (at least whenever Thomas Edison reared his villainous head).

Dictionary.com Word of the Day
Tweet a hypothetical force formerly held to pervade all nature and to manifest itself in magnetism, mesmerism, chemical action, etc. “I studied mind-cure, or metaphysical healing, which strikes at the root of disease; I went into hypnotism, mesmerism, and phreno-magnetism, and the od force—I …