deet · noun1
Abbreviation.
DEET · proper noun2
From d t, the initials of diethyl and toluamide in the name of the chemical.
Etymology from Wiktionary, CC BY-SA 4.0.
deet
Today it means: An insect repellent (chemical name N,N-diethyl-m-toluamide) that can be applied to skin or clothing. Full definition →