A pun combining the chemistry term Diastereomer and disaster;it is used to describe a person with excessiveknowledge in chemistry. A chemistry know-it-all.
"I hear your friend aced that chem exam; for all intensive purposes he's a total disastereomer."
Someone who is addicted to obtaining money and building wealth. A money addict and fanatic. Breadheads often work more than one full-time job, and some even participate in illicit activities to "obtain the bread".