Hitting the dic- section has brought out my inner Beavis and Butthead. Unforseen circumstances of research
dianoia - the mental faculty used in discursive reasoning.
diaphoretic - producing perspiration.
diatreme - a volcanic vent produced in a solid rock structure by the explosive energy of gases in magmas.
Or from a diet of refried beans
dick - detective
Dick test - a test for determining immunity or susceptibility to scarlet fever in which scarlet fever toxin is injected into the skin, susceptibility being characterized by redness at the injection area.
I think I'll put this definition on Urban Dictionary
digitalism - the abnormal condition resulting from an overconsumption of digitalis.
Symptoms include the inability to read analog clocks