It stands for Double Tap on Instagram. Meaning they want you to like the photo by double tapping/clicking on it.
dt means online dating and fbm means facebook meet
Design Technology
Down town
If by DT you mean Design and Technology then the answer is: La technologie (you also need some accents)
deep throat specialist
Digital Television
While some people refers it to InstaGram. The most common acronym for InStaGram is "Insta" or "ISG".
J
DT can mean several things:Damage and Tolerance- in which case a DT engineer would measure wear and tear on products and suggests remediesDrive Testing- in which case a DT engineer would drive a vehicle (or any product) to test it.Or any one of about 100 other things...
On Instagram, if you are mentioned, it means the other person has tagged you to include you in their conversation.
The usual phrase used is "DM" which means "Direct Message""DT" is probably similar to this and means "Direct Text"
"Mean" Joe Green played DT