Neither do I.
My two pet peeves on FR - photographs of public or private people with no identification whatsoever, plus acronyms like the above "dx" that nobody recognizes.
Leni
“dx” is an acronym/abbreviation for “diagnosis” in MEDICAL field/terminology...
So of course, anyone who has not come across the term or is in a medical field will likely not know it :(
Benefit of doubt...folks using such terms forget that we are not all medical professionals?
dy/dx = change in value of variable y divided by change in value of variable x.
Used mostly in calculus.