
Leave “delta” alone unless you’re discussing Greek like, referring to alluvial deposits, or sitting in math class or on the derivatives desk. (Photo: John Belushi in movie “Animal House”)
Delta, noun, a change in a variable. Usage note: Once you’re out of math class or off the derivatives desk, don’t use this word unless you’re either talking about Greek life, eg, “I heard the pledges were forced to drink cow urine at Delta Tau Delta” or alluvial deposits at the mouth of a river, eg, “It was the number of Sazeracs I drank at the Carousel Bar not New Orleans’ location in the cloven-footed Mississippi Delta that caused my blackout and delirium tremens.” Unfortunately, pompous financial types often use this one when discussing a difference of almost any sort. Examples range from the sordid, “The massage parlor charged me ten dollars more this go-round. I can’t account for the delta,” to the mundane, “Gross margin dropped dramatically because of mark-downs. It was a delta of more than 200 basis points year-over-year.”
According to Iva Cocke, Professor of Rhetoric & Communications at Northern Southwestern Indiana Normal School and Business Institute, who has written extensively on Wall Street patois, the reason why financiers have adopted an abhorrent term like “delta” is somewhat complicated. Says Professor Cocke: Continue reading










